Glad you could join us! I'm guessing the most interesting thing you have is the Alien 3 workprint, but since you sound unhappy with the quality it's probably from the same source as other copies mentioned here. What format is it in? If it's a DVD it might be worth sending it to one of the guys here for a comparison...
The Alien UMD sounds like an interesting oddity (maybe to include as excerpts or something), but I don't know how it could be transfered to DVD - maybe someone else knows more? What's the resolution and sound quality on those things, anyway?