It's my guess that your Brother Multi-Function Printers will NOT work on Terminal Server. I had the same problem and received the following response from Brother
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Brother Customer
The MFC 4800 is not designed for network use. Once the printer driver is properly installed it can be shared. All other functions require a direct connection to the PC
Terminal Services is not supported
For information on Windows Server 2003 go to
http://solutions.brother.com/Library/faq/printer/prfaq0830/prfaq0830.ht
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Aside from stating that these printers are NOT supported you should understand why some printers work and others do not, as it's not the same as hooking up a printer to your workstation and installing the software/drivers. Detailed instructions are here
http://www.workthin.com/tsp.ht
Brother MFC-4420C Downloads (none for 2003
http://solutions.brother.com/mfc4420c/download/drivers.htm
Patrick Rous
Microsoft MVP - Terminal Serve
http://www.workthin.co
----- dlw wrote: ----
I have a Brother MSC4420c all-in-one printer connected to
an XP workstation, when they RDP into the Windows 2003
terminal server, that printer does not show up on the
list. When you install an older epson on the workstation,
it does show up on the list
What's the deal there