I just dealt with 2 of these yesterday. You'll need to contact dotregistrar.com and tell them the circumstances. From what I heard, they're understanding of the situation - they'll do what they can to help. You should have a receipt from when you purchased the account - you'll NEED that to prove YOU paid for it.
Hope that helps.
Joe
__________________
http://www.hostpc.com
DirectAdmin servers for hosting, resellers and your dedicated needs.
Hosting, Resellers, Dedicated Managed and Unmanaged servers
Hosting since 11/98 - Specializing in DirectAdmin since 8/03