is there a compression tool that compreses hard drives that works with both windows nt and win 95

I don't believe that you are going to compress a hdd, but you can compress files and save them to the hdd. Win-Zip is a utility that can compress files, you can download a free trial here.

If this doesn't answer you question then I have misunderstood, if that is the case please rephrase you question.

yeah sorry if you couldnt understand that i was in a rush i ment things like drive space 3 but it works for both 95 and nt