I used ROX' "pinboard" capabilities when running pre-Kathrin pdaXrom. (It was running on top of OpenBox though.) A minimised window should create an icon on the board that you can drag around.
In your case, you might just need to add Pinboard to your .xinitrc file.
In the Options menu, look under Pinboard and under Compatibility. Under Pinboard you can adjust it so it won't intefere with your desktop furniture, and Compatibility has other adjustments for ROX vs. windows manager problems.
For windows sent to other desktops, Ctrl+Alt+L/R Arrow should switch you between desktops. (Ctrl and Alt are mapped to Calendar and Address in pdaXrom as defaults.)
Hope that helps,
NXK