here's the updated howto for the current version of MP and IR Server Suite -
This applies to the standalone version of MP - eg, the not using TV Server and using the standard MCE remote. I don't know if this cfg will work for other models of remotes. Also, the section on removing the OS handling the ir receiver only applies to Vista. I don't know how it will go with XP Media centre.
Install MP 0.2.3.0 + latest SVN.
Install latest IR Server Suite - this can usually be found in the sticky thread in this subforum (MCE Replacement
Plugin). Make sure you install TV2 Blaster Plugin and Tray Launcher.
Configure tv card attached to STB in MP. I usually configure my analog card attached to STB as card1. Do not enable the MCE remote option in the remotes section!.
Go to Process plugins in MP configuration. Enable (if it is not) the MP Control Plugin for IR Server. Also, in the plugin's configuration clear the existing configuration and add the Microsoft MCE (full) remote.
Under the process plugins -> TV2 Blaster Plugin for IR Server, go to the configuration and configure the blasting commands for your STB.
Load IR Server Suite -> Input Service Configuration. Enable the send and receive for MCE Remote.
Follow the instructions in this post to disable the handling of the ir receiver by the OS -
http://forum.team-mediaportal.com/214180-post366.html
Happy blasting.