Can anyone tell me the purpose of this facility?After 2 years, I've just cleaned these files off my hard disk and retrieved 2GB of space. As it does seem to save disk space what does it do?

>As it does seem to save disk space>what does it do?It compresses them ....You can compress all files under XP, even your FS9 folder.Michael J.WinXP-Home SP2,AMD64 3500+,Abit AV8,Radeon X800Pro,36GB Raptor,1GB PC3200,Audigy 2

It claims to compress old files, ie those that haven't been used for a specified time. I don't think it is anything to do with normal file compression.However, Disk Cleanup lists them as files that can be removed to give more disk space! As I said, I did this and got 2Gb back, but Disk Cleanup still shows Compress Old Files using 2Gb and its set to compress files that haven't been used for 60 days.I'm still puzzled.