I have come across this one before.On right click you have no properties,delete or move ?.It wont delete in the normal way.It comes from a **** site and its not a virus.I was given one to try out and there is no way to remove it....but..........
.............I got a program called
Hide Folders XP 2.4.5 [Only Registered and Activated Users Can See Links. Click Here To Register...] .The trial version is in the right hand side pane under Hot Links.
You will then need to remove everything that you want to keep from the Kazza shared folder,leaving the bad file in there.Rename the folder if you wish and then you can replace it with the original name folder when its all done.
You can then run 'Hide Folders XP' and and hide the folder.
There may be a possibility that you can then cut and paste the whole 'Hide Folders XP' program onto a floppy when done,but as yet I have not tried it.All I did was to put it on my backup hard drive.....