Geoff

Once things are installed you can do without the cabinet files. But they do contain copies of drivers, so if you install new hardware you will probably need driver discs or your system installation discs to get the drivers. They also contain copied of your system files and are used to replace corrupt files or install features that you didn't install at setup, so removing them can also mean you'll need your systems discs for that purpose.

I leave mine on the hard drive, and unless you're short of space I'd say do the same.

Mick