Urgent Please Help. Visa stamp validity?

[vkhetri]

I have been living in the US since Sep 2005 on H1B visa. In Feb 2009, I changed my status to F2 and returned to H1B in May 2009 (valid till Jan 2012). However, I got H1B visa stamped on passport in Jul 2008 (valid till Jun 2010)

I just wanted to know if the H1B stamp that got before changing my status is still valid for entering USA? Or do I need to get a new H1B stamp to re-enter USA? I was on H1B when I got the stamp, went on F2, but am now again on H1B status. Did changing to F2 invalidate my H1B visa stamp?

Thanks for you help,

[shervin143]

Your H1B stamp is still valid.