SIT and DSK are NOT the same thing at all. First you have to unstuff the SIT. Then the resulting item should be a DSK or IMG file. If the contents are loose, you will have to get a disk image, mount it and drag the loose applications into it. You should be able to create a 1.4MB disk image in Windows that mini vMac will read. I suggest you visit the mini vmac site for details as there are a number of resources there for doing just this.