H1B offer while on F-1

[kppatel]

Hi,

I am currently doing OPT till the end of year and going back to school for my Masters in Jan' 2010.

My employer will be doing my H1-B in April 2010.

I need some advise on what would be the best way to handle this situation.

Should I start my Masters in Jan and apply for COS to H1B?

I have no idea on how to proceed in this situation.
Any help will be much appreciated

Thanks

KP