I used SPB Mobile Shell a while back for the Facebook/Contact Images integration and thought it was ok. I'm sure at this point there are several other ways to do this (Latest TF3d for Touch Pro 2 has Facebook integration built in?) but for now I find that the Facebook/Win Mobile contact integration using Resco contact manager to be the best for this on my Touch Pro. It's not free but you might want to check it out.
http://www.resco.net/pocketpc/contac...h.asp#Facebook