Problems running "startx" on FreeBSD 5.2.1

[Sanjay Chadda]

Folks,
I have a Dell 2400 series desktop with Pentium4 processeor. I am not
sure what graphics card I have. I looked at the Dell site and it seems
these models have the integrated chipset 82845G on them. So while
configuring Xserver, I gave this info for this chipset.  I have FreeBSD
5.2.1 installed.

When I run "startx", I get following errors:

VGA(0) : Virtual Length (0) is too small fo rhardware (min 1)
Screen(s) found, but none have usable config

Has anyone come across this error? If you know how to get rid of this
error, pls let me know. Maybe I missied something while configuring X
server.

Any help will be greatly appreciated!!
Sanjay