I had a chance to catch up on some of my mags while I was out of town for a few days, and I came across an article about MAME and MAME cabs in the May issue of CPU, 
www.cpumag.com.  The article was written by Rob Malda (slashdot), and there's a quick plug of Ultimarc's IPAC.  If anyone is interested, there's 
a jpg of the article here (160kb).