Magilla,
I am not an expert, but I have been trying to figure this out myself. I have two Sony TVs, a KV-32FS100 and a KV-24FS100. Both have different chassis designs, but are NTSC only. I have had limited success connecting their component inputs to a TC1600 transcoder, with the VGA from my HD 4650 (using a DVI-VGA adapter).
Using GroovyMAME 148u5 (or GroovyUME, which combines MAME and MESS) will allow you to display most native 15 KHz resolution games on your TV, with limits. It seems most of the posts on BYOAC are from members who have PAL / NTSC televisions, which have a wider range of frequencies, and can therefore display more games at their native resolution. Many of these may also be using SCART, which seems to be a direct RGB interface common in Europe and Australia. Most of these people seem to love the image quality, and the flexibility these TVs provide.
Sadly for me, living in the US only provides me access to NTSC only TV sets. Although I am using component inputs, these CRTs seem to only display 240-250 lines progressive video. So games which are vertical (Frogger), or require 256 lines (R-Type, Mortal Kombat) , all have varying degrees of issues (cutting off portions of the image, interlacing displays, etc). I've come to accept the fact these TVs may be limited in their effectiveness if you have games above 240 lines you want to play.
Interestingly enough, I have had excellent results using a 22-inch computer CRT instead. Even though it is 31 KHz, you may find posts in the GroovyMAME section describing how to achieve frequency "doubling" to display native resolutions on these displays, with the hardware scanlines (no HLSL or other tricks). So instead of 320x240 at 60 Hz, the game might display 320x240 at 120 hz. The best part is every game displays perfectly, regardless of resolution!
I hope you can figure out this TV to your satisfaction. Check out the GroovyMAME section, as I have seen many other posts about these TVs there, but remember most are PAL/NTSC sets and not NTSC only.