Beating my head on the wall......
Well I rediscovered a bunch of old (ancient in tech terms) parts I had. The board is a brand new in the box Intel 955X. It is a full size (12.8" x 10.5") BTX mobo. Read that last sentence again.
Good luck finding a cheap BTX case that isn't micro or pico. I was considering buying a used Thermaltake case and BTX 'upgrade' kit. I didn't want to spend more than 40 or 50 bucks on the case. I gotta get with the times...BTX is no more. Only Dell seems to use it, but there cases and boards are like custom built for each model.
I had to go searching in the Thermaltake discontinued/refurb/clearance bin and get a Aguila case and a BTX conversion plate. Hopefully that works, if not I am going to use a cardboard box. I learned my lesson here......BTX is gone (like I used it anyway), and throw away any BTX parts I may have.