Don't touch ROM Manager if you value your Tab. All recovery images are currently based on ClockWorkMod, but you'll want to flash it normally.
Look in the general forum for rooting/flashing guides.
1) There is NO SUCH WORD as "alot" - It's "a lot"
2) The shortened form of You are is You're - NOT Your
3) Loosing & Loose have completely different meanings to Losing & Lose.