Below is just a tid bit on the subject. I'll try and get you more, but it's pretty easy to understand in a nutshell with the article neloew....
http://www.smartcomputing.com/editorial/article.asp?article=articles%2Farchive%2Fl0502%2F62w98%2F62w98%2Easp&guid=p0d627nu&WordList=
Accessories
February 1999 • Vol.5 Issue 2
Using . . . Drive Space & Compression Agent
If you have purchased any new computer programs lately, you have probably noticed that they take up more and more space on your hard drive. The available space on that 400 megabyte or 1.2 gigabyte drive that you thought was enormous has dwindled. You don’t want to spend the money for one of the new multi-gigabyte hard drives, but, at the same time, you’re worried about your hard drive’s rapidly shrinking free space.
You’re right to be worried. It’s not a good idea to run any version of Windows with less than 100 megabytes (MB) of available disk space. You might get error messages while you are working simply because Windows is running out of room to carry out some of its tasks. You might even start having other problems, such as commands that won’t work or your computer deciding to reboot itself at random.
Don’t you wish you could wave a magic wand and presto!, your 400MB disk would become 800MB? With the DriveSpace 3 and Compression Agent utilities bundled with Windows 98 (Win98), you can do just that.
Compression Basics.
DriveSpace 3 compresses your hard drive; it increases its storage capacity by making a new compressed drive on the existing one and moving all your files to it. DriveSpace also lets you monitor how much space is available on your hard drive or diskette. Before you can really appreciate how DriveSpace 3 and Compression Agent work, however, you have to understand a little about what disk compression is.
Normally, when a program creates a disk file, Windows writes the file on the disk exactly as the program created it. When a file is compressed, however, the system checks the data for duplicate information....