Do I need a stamping?

[rkj]

Hi,
I am in India and need to travel to US in two weeks time.
I have a stamped h1b visa for employer X, valid until June 2011. I now got my h1bvisa transferred to employee Y. And I need to travel to US for work on employee Y. Do I need to go in for a fresh stamping after I got my visa transferred and approved? or will the previous stamping be good enough for me at the Immigration?
Thanks very much for all your answers ans suggestions in advance.

[kabkaba]

If new employer's petition is approved and you have that approval notice, you can use your current Visa and the new petition approval notice to enter the US and work for this new employer. You do not need to apply for another Visa.