WM 2003 device not reading memory cards
I just acquired an IPAQ hx2750 pocketpc with WM2003 SE. For me, this is an upgrade from an h2495 which I really enjoyed. The problem I'm having is that when I open a program like Excel, ereader, or Word, none of the files that are on my memory cards (CF or SD) show up in the list to select and open. I can go into File Explorer (actually I use Total Commander) and see the files there, so I know they exist. And I can open them (except ebooks) from there and edit them.
What needs to be done so that I can see the files inside whatever program is supposed to be used to open them?
As a side question, should I upgrade this ppc to WM5 or 6? If so, could someone direct me to the necessary upgrade files and directions (the simpler the better)?