Ah thank you, I suspected as much. Before I posted this query I had tried to make them into a .zip file but that didn't work at all. And I never thought to just double-click the little blighters (hmm, a self-decompressing archive - who would have thunk it?). For people like myself (a noob with 30 years experience in the PC industry), my attempts were to either use the file as is in WUD or try to rename the suffix as a valid archive format, so maybe jcarle can indicate on the website that one just double-clicks on the .ulz files - a somewhat obvious but ultimately undocumented part of the website. On another note, maybe the name WUD should be changed to the more relevant MUD moniker, since it's not just Windows that we can use this proggie for but all of M$'s product line. However, I can already hear the cash registers ringing in the laywer's offices for using the name (that shall not be mentioned, ala MacBeth, whoops!) at all. Thanks for everything.