JP1 Remotes

Before I order parts and build this.
Anyone actually using this and finding it useful?
I have 2 OFA 9910's I'd love to use with my X10 system without the IR543 boxes I'm using now.

Find a 25 pin serial header from an old 386-486 PC.
This has the hood with 9 wires running to a 10 pin header.
Cut off 2 rows of holes (I used a Dremel tool).
Solder the diode, resistors and wires in the proper place.
Voila, you have a JP-1 cable. Total time <10 minutes.
IR.exe came up and read the ...