While recording a game last night (future SB champs the NY Football Giants on my computer using my WinTV-HVR I got an alert stating my available hard disk space was critically low. The file was only 6G and I thought I had at least 40G available.

So I stopped the recording and removed progams I hardly ever use. Increased my available space to 25G. But it should be more. Looking at my Program Files folder I am only using 2G of space. Can't for the life of me figure out what's using all that room?

How do I investigate this? You know, locate the huge files that may be hogging space? I'd like to either delete them or burn them to DVD then delete them.

Thanks for your help.