Delete temp files under Vista

[Mint]

I frequently work on other systems running Vista.

For security, I would like to delete the temp files in the windows
\temp directory.

del /q c:\windows\temp\*.*

This batch doesn't work, even when run as an Admin.

I recall that Vista has 2 levels of admin. (Semi-admin and for real
admin)

If I can't do it via batch, I am game for writing a program to do the
job.

What are your thoughts?

Thanks.