I think it's your monitor, if anything. The 9200 series should support per-pixel fine, and from what you say in your post, it does...if the refresh rate on your monitor is higher. So I think a new monitor and you should be good to go. Also, as far as I know, a 17" monitor is designed for 1024x768 resolution as the "optimal" size. If you go up to 19", the standard res. is 1280x1024. A new 19" CRT is not that expensive at all, you can get a top of the line for close to $200. A cheaper one will run you quite a bit less.
I'd recommend this one: http://www.newegg.com/Product/Product.asp?Item=N82E16824116281
I have the same one, lasted me 4 years and still going strong...