I have to agree that this isn't anything difficult. I doubt you need anyone on site - anybody who knows a little SCO and Microlite should be able to fix you up if you can configure a router to let them in.
BTW, current Microlite Edge can backup to a FTP server also.. you may not even need tape.
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---------- Post updated at 09:56 PM ---------- Previous update was at 09:54 PM ----------
Oh, and no, don't bother with the .exe. Download the .elf, put it on the box, chmod 755 it and then run it. It really is that simple.