Write a batch file to delete it.
Simply open notepad and type the following:
del "path"\"filename"
"path" is the path such as C:\Program Files\XP Smoker\
"Filename" is the name of the file such as junk.zip
put them together: C:\Program Files\XP Smoker\junk.zip
so it should look something like this, however, substitute the Path and filename for your actual path to your file and the file's actual name:
del C:\Program Files\XP Smoker\junk.zip
save the file as junk.bat
Add this file to your startup folder on you startmenu
reboot
If you do it right it should delete the file.
Then remove junk.bat from your startup folder in the start menu.
You could also try this program called in-use from Microsoft.
It is a command line utility to enable you to delete or replace a file upon reboot.
http://download.microsoft.com/downlo...N-US/inuse.exe