Good to meet you and welcome to the site, I am just sorry that you find yourself here
I hope that you are doing ok on the Rebif, if you don't mind me asking, why did you have to switch? I am on Avonex and have had ms for about 8 years.
I hope that you will find the site interesting and informative, the folks here are very friendly and so willing to share their wealth of experience and knowledge.
I am sure we all look forward to hearing more from you.