My dear chap, and with the greatest respect:

What version of stuffit...........is it an XT compatible or a Mac?

With the amount of information we currently have I doubt if Langley could help you better.

Sure there are lots of "cracks" for WinZip and so on..............you are talking something different here?

I will now ask you some questions:

The .sit-files contain some logotypes that one of my former freelancers have made and I need to open them and adjust some things...
So, are you aware of copyright law?...........did you pay the person in accordance with your agreement?

If you did, how the F*** did you pay for something that you obviously do not physically own?

Please do not come onto a site such as ours and expect advice on how to do things like this when we know jack **** about you.............

To measure how serious you are............just how much are you prepared to pay for "private consultancy"?