I'll have to recheck it.

What edition of sql server 2000 is it? Standard,Enterprise,.. 32-bit or 64-bit

What edition of windows 2003 is it ? Standard,Enterprise,...

Your problem problably has been discussed on

http://sql-server-performance.com/Community/forums/p/24896/138597.aspx#138597

but I'm sure the experts will help you out.