Now that you're in a chatroom and you need to find someone to talk to. Here's some tips on what to do and what to say. And for the sake of clarity, I am assuming that this is one on one evangalism, not you witnessing or preaching to the whole chatroom
There are a million differant ways to start your witnessing once in the room. You could just ask if someone wants to chat one on one. Or you could whisper someone if they are a Christian. Or you could listen to the chat for awhile and see if someone is facing difficulty that you can help with. Remember, let the Holy Spirit be your guide. He knows who will be open to the Good News of Jesus. He will also give you the words to say if you will only listen.
No matter what they say or do - be loving. Don't say anything in anger or hatred! Those are the easiest ways to turn someone off to Jesus, maybe forever. Remember, you are a reprensentative of Jesus...ACT LIKE IT! Love is one of the most powerful ways to show a non-christian Jesus. Look up I Cor. 13 for what true love is. (this is something that shouldn't need to be said, all Christians should have the purest truest love.)
Most chatrooms now days have one or two people who are loud and obnoxious. If you are with a friend in that particular room don't gang up on them! The same goes for if you are in a Christian chatroom. Remember the golden rule; you probaly wouldn't like it if a bunch of people ganged up on you. Also be careful when approaching them with the gospel; sometimes they just don't want to listen for one reason or another. Now this isn't a universal rule; however keep it in mind.
The type of chatroom evangelism I like is where you develop a relationship with them. So spend sometime and learn about this person. Where are they from? Where do they work? What's there favorite color? And of course let them know things about you. A great way to start telling the gospel is to drop the name of Jesus into the chat at this time. The idea is to make this person your friend; regardless of if they ever accept the gospel or not.
This one will basically go along with the one above. You are a person with likes and dislikes; tough days and easy days; and you have a dynamic and everchanging life. What you will want to do is show them you are a regular Joe, with regular needs, loves, and a regular life. See, if they think your all high and mighty they won't even listen to the message you bring, but if they trust you and consider you a friend your words will carry more weight.
If you never tell someone the basic gospel they can never be saved. What is the basic gospel though? I learned what is called the Roman Road whiched summed it up really good. In only 4 verses you can present the all basic concepts of salvation.
For all have sinned and fall short of the glory of God.
For the wages of sin is death, but the gift of God is eternal life in Christ Jesus our Lord.
But God demonstrates his own love for us in this: While we were still sinners, Christ died for us.
That if you confess with your mouth, "Jesus is Lord", and believe in your heart that God raised him from the dead, you will be saved. For it is with your heart that you believe and are justified, and it is with your mouth that you confess and are saved.
Of course you do have to have a better understanding of the gospel then what is listed here in order to answer any questions they may have. This is only what the basic gospel here.
A smokescreen is when they ask a question that get's you off track; either intentionally or unintentionally. When they ask a question, answer it, but try to be brief and do not let it get you off track. And when you do answer a question, make sure they understand, it may take you a little off track, but as long as you steer the conversation back toward Christ it's ok. Also, when you do find your self getting off course try and get back to talking about Jesus at every chance.
At one time or another you were where they are now. But you've traveled down a road since then; tell them about it. If Jesus helped you through difficult times tell them about it. You are a witness and a witness testifies to what they have seen and heard. Has God done a miracle? Did he provide for one of your needs in a awesome way? A great car at a ridiculusly cheap price just when you needed it? The more personal you make it the better.
Make sure you avoid sayings that only other Christians would understand. Saying such as "Accepting Jesus in you heart" or "Washed by the blood of the lamb". (They probably will think you have a miniture person in your heart or will think you are in to animal sacrifices!) Using them with other Christians is fine but these will won't help you give a clear presentation of the gospel. If you do let one of these slip make sure you rephrase it afterward so that they will understand you.
Unlike satan's kingdom, Jesus' kingdom is not founded on lies. So if you don't know something, say so. Don't be afraid to say "I don't know". We are finite beings and it is impossible for us to know everything. And if there is some part of the bible you don't understand, just tell them that you don't quite understand it. No one can truly understand everything about the bible. Sure, some out there will think that because you aren't all knowing that your message isn't true. However, all you can do is try and explain to them that you don't know absolutely everything about God; no one does; and try and answer any other questions they have. After you have stopped talking to them try and find an answer to there question and get in contact with them if you can.
Before you leave them make sure you do a few things. First, ask them if they understand what you've just told them. Do they have any questions about what you've said. And if they do; answer them, but don't be led off track. Second, ask them if there is anything holding them back from accepting Jesus as their Savior. If there is try to help them with it. If they don't want to give up their satanic music show them that the trade off is worth it. Third, Get their email or give them yours; as well as any ICQ numbers or other Instant Messanger usernames. Let them know you are always there for them. If they say no to Jesus doesn't mean that you might not lead them to salvation down the road. And if they say yes to Jesus you will need to help this new born Christian grow. Of course; if the say no don't push; a no is a no. However, don't let this stop you from starting a friendship with them.
No one can be forced to accept Jesus as their Savior; either they believe or they don't. Forcing only ensures that it will be even harder for the next Christian to witness to them. Just tell them the gospel and let them decide.
Well now you've told them the good news of Jesus Christ, either they've said yes or no. Either way there is just a few things left to do.