Blackjack Smartphone woes

[innerslytherin]

Anyone out there using a Blackjack? I have installed programs on it in the past using CAB files, and yet for some reason now that I'm trying to install a few more, the phone claims the CAB files aren't there. I can see them on the phone when it's connected to my computer. I can see the files on the phone when I do a search--but I can't OPEN the files, even when I find them via a search. I just added a 1G storage card, so I know it isn't a memory issue. This is driving me crazy, I can't seem to find an answer using Google, and the people at windowsmobile aren't responding to my request for help there.

*sigh*