I've tried various solutions posted re: RDP session printer redirects and for my efforts, none are currently working for this printer: Brother MFC8500.
On the local computer it is connected via USB using the Brother port name BFM (or similar). I have tried the following:
1) created new registry key vis a vis : http://support.microsoft.com/default.aspx?scid=kb;en-us;302361
2) installed brother drivers at LPT1 on SBS2003 server (just that, nothing else, i.e. sharing, mapping, batch files)
3) checked the Terminal Server Configuration for "allow printing to client" (paraphrasing)
Anyone know what else needs to be done to get this working?