CRT monitors do any combination of resolutions between their max and min. Sorry your TV (I assume) doesn't support 720p.
720p and 1080i work fine on my old 21" CRT monitor.
Btw...I play many games on my SDTV and other than more being on the screen there is not a noticable effect. I look forward to having a larger HD display, but until then I'll be fine.







