what Kathrine is saying is restore...start...help and support...system restore...but...let's take a look at your problem...you installed IE 7 no doubt and now you can't get into the chatroom...hmmm...a question...are you still using winxp or have you upgraded to vista?...if you are still using winxp... IE 7 still has a few bugs in it...if you are using vista...you will need to upgrade your java to a vista version...ok...now to take out IE 7 if you are still using winxp....start... control panal...add/remove programs...uninstall IE 7...if it tells you that there are programs that may still need IE7 to function then go out and go to start...help and support...system restore...create restore point...now go ahed and uninstall IE7...this way if there is a problem you can restore your system...but in all honesty the only reason it would say that there are programs that may need IE7 to function is because you installed them after installing IE7...anyway...go ahead and uninstall it...if you need more help then just let us know...