1. With most ppcs u get rom & ram storage, the os usually occupies the ROM, on my 2210 the 32mb rom is dedicated to the os, and the 64mb ram stores programs and acts as program ram.
2. Most ppcs come with cradles and sync with outlook via a supplied program called activesync, you can also sync over wifi and bluetooth if needbe
3. Some ppcs have compact flash slots others dont, u need to look around for a ppc with compact flash. (Again my ipaq h2210 has both sdio and cf slots)
4. Not a clue about databook sorry
