Ordered an OBD II interface cable from OBD Diagnostics. Quick and painless. Paid $88 via PayPal and got it in 3 days via USPS mail.
Installation was straightforward. Only gotcha I can warn you about is that it introduced an even louder thump when my sub's amp turns on. Gotta try one of those ground loop isolators.
I like the software from the site. Very Car PC/Touch Screen friendly. Here are some pics of the install:
Here is the box:
Connector fit plug perfectly:
Nice big fonts for displaying information:
And of course cool analog gauges:
Let me know what you think.