OT : stuck with a file. any idea ?

[Corsair]

On this first day of 2007, I'm stuck with following problem.
I wanted to make room on my HD and burned some big files to CDs. I was just using the Windows assistant for burning the CDs.
Something went wrong on the last one, I am now stuck with a file 485 Mo (an .exe mod for OFP) that doesn't want to disappear from the temporary files waiting for burning.
So I still have the original file on my disk, I have the temporary file inside the Windows assistant. System refuses to delete any one of both (probably considers the file open) if I burn it to a CD, the assistant refuses to close at the end of the process and keeps the temporary file as "waiting to be burned". Tried to use CCleaner but got stuck also. If I delete any of them I find it in he dustbin but then system refuses to empty the dustbin...

Any expert here that can help me with this one ? Thks...