Haven't actually tried it yet on E2k3, and I may get laughed at for even mentioning it, but ntbackup.exe (native backup app in windows) has worked pretty well in certian situtations. I have it running a backup for one of my networks that includes Windows 2000 server and Exchange 2000. The one major limitation is that you can not restore Exchange information to the item level. Example: User deletes one important e-mail. You can restore the user's entire mailbox, but not that one e-mail item.
James
MCP, MCSE