Glad to meet you but sorry about the DX. You will find lots of advice and help here. This is, with out a doubt, the best MS board on the net.
I also take Rebif, been on it for about a year and a half. After about six months the worst side effects (flu like symptoms) subsided and now I don't enen have to take ibuprofen before injecting. My last MRI showed no new lesions, so it seems to be working. Hope it does as well for you!
Looking forward to hearing more from you.
RRMS since 01/07.