Don't be an idiot. Please!
Known as as BadTrans.B, the worm installs hacking software on infected computers. I have to stress, this only happens when you open the attachment. Don't. Don't open attachments from people you don't know. It's like opening a letter containing anthrax. You might want to also start using a different mail client like
Eudora or just start using linux which doesn't open virii by default. Bill Gates won't do anything about it, you have to.