Only upgrading some domain controllers from 2000 to 2003

BrooklynBadass · Guest

I have a single domain with 5 domain controllers, 2 of those domain
controllers are working but I do not have remote access to them and I
will not have access to the buildings for another month. I only have
2000 users so I'm wondering if I could upgrade my 3 other DC's to
Server 2003 and get to the other 2 later. Does anyone see any
potential problems with this? I imagine they just won't authenticate
users or something like that.

thanks
NH