H1 extension

[topcatin]

I am a h1 holder with a university which expires in May 2010. If I find a job now in another university. Is it possible to use the remaining time of my current visa and do the transfer? If Yes, how much will a transfer of visa cost in this case?

How much does an h1 extension cost?

How much does a H1 transfer cost for a new employer?

Thanks guys and look forward to your reply.