It is so very good that you asked before you deleted. I make a great deal of my income from clients who deleted something they didn't think was necessary. I'm not certain about the Dos6.22 directory, although I have a very good guess: I suspect that is the original full set of DOS 6.22 installation files. Whether you need it or not is probably dependent on whether you have (or want) a set of DOS 6.22 installation floppies. You probably should not delete that directory without knowing for certain what they are, although if it were my computer, I'd probably just put them on floppy disks and then delete them from the hard drive. On the other hand, the c:\windows\sysbckup directory is where copies of the most important .dll's, virtual device drivers, and a few other files are kept. Its purpose is to allow a clean copy of one of those files to be automatically copied into your c:\windows\system directory if windows detects that one of them is corrupted. It performs a *very* important function, so please do not delete it. Roxanne Pierce R2 Systems, San Diego mailto:[log in to unmask] > When doing some drive house cleaning I noticed 2 > interesting directories (folders). The first is called > "Dos.622" and the only thing in it is another directory > called "Dos". The other interesting directory is a > sub-directory the Windows directory called >"Sysbckup". It is a normally hidden directory and has > about 33 files using 2.3MB. > > Jerry Belfor > [log in to unmask]