Cheers NTDOC thats a nice offer. Well its simple really:

The main script is the logon script mapping drives, setting time, etc etc (for about 7000 users)

I want to do a dir c:\*.exe /s/b ><servername>\blah$\softwareaudit

which as you can guess can take a wee while. So I thought, why not execute a script that does the DIR in the background after the main script finishes.

Thats it really...