i think he thinks hes downloaded summet,What will go away? It doesn't work like that. The actual server this forum is hosted on is "hacked". Fact is when a hacker gains access to a server he will always leave a backdoor for him to get back in after the admins or web dev's "clear" the problem. The only solution is to backup the SQL db and forum skin, images and delete all files on the rollitup.org server, completely format the machine, reinstall the forum, the skin and of course the SQL db so all posts, members, content ect is returned.
Admin's also have to close unmonitored ports or set restrictions, this being a website there is no need for any ports to be open besides port 80.
The problem isn't removing the virus from visitor computers, it's removing it from HERE!