MythTV -- IR Blaster -- lirc -- Samsung SIR-S300W
I've dug-up the following links which are all promising. It's looking like I'm going to need a trip to Fry's to make an ir Blaster.
Does LiRC work by bitbashing over the serial port? Is it wiggling the RTS/CTS/DTR lines? Anyone ... anyone ... Bueller ... anyone?
(lirc config file: SIR-S300W)