I think Yenome may be referring to the second link in my signature. Check it out.
As pointed out, that TV can't display below 480p. 90% of the games in MAME originally ran around 240p. If you're going to go through the trouble of using a real CRT, you should try to go native res, so you have real arcade quality picture, with real scanlines.
Save that TV for watching real 720p content from your couch, it will be nice for a PS3 or 360. It's way too big for an upright anyway; it will be pretty uncomfortable being close to that thing, burning your eyes out and having to look all around to see what's going on.
You can get an appropriate TV for MAME for under $50 on Craigslist, eBay, or similar, in most places. I've picked up about a dozen, many of them free. Just be sure to get something with component inputs, that CAN'T display 480p or more. I like Sony Trinitron's, 24" or 27" max for a cab.