Possible Commit Charge = Physical Ram + Hard Drive Page File
You don't need a program to tell you how big your HD Page File is...
IF HD Page File = 0, then
Possible Commit Charge = Physical Ram
Basically yeah, it's stupid that windows combines all your physical ram and the HD pagefile into one pagefile. But that's just how it is, and if you set the pagefile to 0, ie. you disable it, then it isn't like windows will say "no, i'm making a HD pagefile anyway". I've messed around with the size of my HD Page File more than a few times, and if I specify a certain size, windows doesn't spontaneously change it.
I know that with vista anway, I definitely need another HD pagefile, since I only have 2gb of RAM. Games like Supcom will use up 2gb of RAM by themselves