I thought the same thing, that any really vital files wouldn't be allowed to be tampered with. But my dad says a couple times avast! would point out that the files that were going into the chest were important system files, and it would ask if we'd like to continue putting it in the chest. He didn't really know what that meant, and by that time we were both pretty desperate to get rid of the virus, so we just hit yes to all.
And I saw that topic as well. The virus is supposed to infect executable files, which further leads me to think that the files I put into the chest might have been of some significance. The only thing that shows up is my wallpaper, so it seems like the problem is that the executable files that should be starting up at that time are stuck in the chest.
The only thing I'm really concerned about is getting my files out and saved somewhere else (I know I should have done this before
). Otherwise I'm willing to reformat/reinstall/get a new HD, or whatever I need to completely get rid of the virus.