If you've got a big card (512Mb at least, 1Gb is even better) and don't want to port anything, search this forum for "Debian on pdaxrom".
Set up debian as described in the first post, apt-get all gnome or other apps you like.
They will run in the pdaxrom window-manager.
Just start them using: "# Crd the-app-you-like &" from an aterm
I used to run e.g. "kbudget", "planner" and "gnumeric" this way.
Now I run planner directly on pdaX (and I don't really notice a speed difference), gnumeric still this way cause it seems to have less problems with my xls files.
Chero.