Is there an Ir server program or does NextPVR have the ability to process a channel request via a network request such as "http//ip port/irsendcommand/235" from a remote computer?
With analog/colossus/hdpvr/hdpvr2 channels you can configure an executable to run, and can passing arguments like the channel number, so there is nothing to stop you running an executable that makes a call to http//ip:port/irsendcommand/235