Seriously though, it would cost you more money to convert your TV to a VGA monitor than just buying the d9200: the only thing you could possibly reuse is the tube and you would have to design special circuitry from scratch.
Remember that VGA != RGB (at least not necessarily), so here are your options:
1. Buy the kit mentioned above to convert your TV to an RGB monitor (no vga here. Just plain arcade-type monitor). i.e. you can't drive it directly with your PC. Read this faq on connecting an arcade monitor to your pc.
2. Buy the d9200 if you want big-size VGA compatibility. There's currently no known way to convert a TV to VGA
Hope this helps.
You CAN drive it directly with your PC -- With the ArcadeVGA.
Look at it this way:
If you can get a non-working 27" tv (with good tube) for 10 bucks from a tv repair shop, spend $95 on the chassis converter from 8liners, and spend $95 on the ArcadeVGA (including cable), You've got a $200 plug and play arcade monitor solution..
The D9200 (with shipping) will cost you more that TWICE that much.
It may be worth it, especially if you can get a good tube for nothing or cheap from a repair shop.
Maybe that's what I'll do (It's much easier to spend $95 here, $95 there, $10 bux for a broken tv than it is to spend $500 up front for a D9200, which a lot of people are driving with the ArcadeVGA ANYWAY!)
--NipsMG