Hmmmm, would Abiword or something fullscale like that not simply keel over on a processor as like the one in the Z5500?
Possibly, but the SA isn't that much slower than the PXA and it runs on the PXA without being too slow; no way to know unless someone tries it out. The problem here though, is that all of the stuff from the pdaXrom feed is compiled using the ARM5 instructions set which won't work with ARM4 processors like the ones in the 5500 and 5000D.
The easiest thing to do is check whether there's an .oe file for abiword in OE, if so try to compile it (or debug it, possibly checking the pdaXrom SDK to see what patches, etc. they use) or just add it yourself.
Not sure about the libs, again check pdaXrom to see the requirements and look at what's in OE at the mo, then add as appropriate.
Si