Cannot connect to d$ share on WinXP Pro SP1 from Win2k Pro computer

[nick1]

Greetings,

I'm trying to connect to the d$ share on a windows xp pro sp1 computer from a windows 2000 pro sp4 computer. The username/password login is presented however it is not accepting my administrative credentials which I am sure are correct. Neither computer is running a firewall, both computers have file and print sharing enabled, they are both in the same workgroup, and both are fully patched. I can, however, connect to the d$ share on the Windows 2000 pro computer from the Windows XP Pro computer - strange. Can someone please explain?

Thanks,

Nick