display issues

hey, I have a secondary Veiwsonic vg1930wm screen that I use with my macbook pro, recently when I plug it in I notics that everythig comes out looking slightly blurred on it. when I go to change the resolution to 1440 by 900 which is what is reccomended for the display I dont have 1440 by 900 as an option. it is as if I have been givin a set of options for a different type of screen, and they are all blurry, i have tried everything to get the right set of resolutions avaliable but to no success, anyone might be able to help?

It could be a bad cable. That would be an obvious first thing to try. Have you done this? It sounds like your monitor is not being detected properly.

thanks mate your a life saver!