Configuring OpenBSD firewall for windows remote desktop.

I currently have a OpenBSD box with firewall enabled by a vendor. The current configuration is (Server - OpenBSD firewall - Outside clients). However we need to configure the firewall ourselves without referring the vendor (P&C issues). Currently the client pc is of WinXP and server is Win2k Advance Server and the firewall is preventing the clients to connect to the server remotely via Windows Remote Desktop Connection. So my question will be, which file or configuration file should i look for to configure so that clients from outside can use Windows Remote Desktop to remotely connect to the servers to do administration job. What are the values that are supposed to be modified?
vyruzjAsked:
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gheistCommented:
http://ezine.daemonnews.org/200207/transpfobsd.html
if you use NAT tell - i will give you another rule
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