I think I might have your solution. I believe you would need to install/reinstall Java Runtime Environment. The download can be found at this link: http://www.java.com/en/download/manual.jsp - Java Runtime Environment Version 5.0 Update 5 by Sun Microsystems. Choose the download that suits your operation system, probably Microsoft Windows. Offline or online installation doesn't really matter, but if you have a broadband connectiong, I suggest using offline. Simply read the instructions from there and you should be good to go. The other possible solution to your problem would be that JavaScript is disabled in your browser. To enable it, start up Firefox and go to Tools>Options>Web Features and check the box labeled "Enable JavaScript." Other problems could stem from an outdated version of FF, although this is doubtful. I suggest trying the simple solutions first: -Try to play Runescape in Low-Detail mode (as recommended by ricey). -Make sure JavaScript is enabled. After trying those, install the Java runtime environment from the link above and check to see if this fixes the problem. I hope that one of these solutions will help and good luck to you. To Moderators: I'm sorry if I'm not allowed to post links here. I'm new to the forum, and I'm not sure if I can.