Redhat has been installed

My only problem now is getting the x windows system working since it boots to mode 3 with text, and when I type startx the screen goes black, I antisipate graphics but I waited less then a munute, maybe I should have waited longer but I did not want to take any chances with damageing my monitor so I turned off the power. I made a boot disk instead of useing lilo. Finaly after many hours of searching I found the specs for my monitor, it turns out Digital Equipment Corp must have merged with compaq or HP, so their home page was dificult to find, anyway the specks are:

Horizontal Sync Rate: 30KHz - 66KHz
Verticle Sync Rate: 50Hz - 1010Hz

So during the instalation process only one monitor made by DEC was in the list and that was not the S/N i have, my serial number is PCXBV-YA it turns out the last two characters did not match so I chose to manualy configure the monitor. And in the list available for horizontal sync rates the one I picked was standard VGA @ 60KHz and a small resolution of 640 by 480, i know mine can definately handle 600 by 800 but I did not want to take any chances, the ones with 600 X 800 looked like the frequency was starting to get high. Should I have picked a difernt one? And do you think if i waited a minute or so after typeing startx that it would have worked, I seen a black screen, waitied about 10 secs then turned off the power.

When i tryed the auto probs it detected my graphics adapter ok, but it choose a 8bit depth for my monitor which I think my monitor can handle more, plus when it was probing the screen was flashing on and off, then it did something funny, and then finished the prob. I am not sure if that was an indicator that it failed. I was expecting it to ask me if I saw something.

Sugestions?