Monitor settings

[Margaret_Doll]

I have a Dell 330, Intel Pentium 4 CPU 1400MHz, 256 KB cache on which I would like to use 24 colors on a 1024x768 screen size. The current system is 2.4.18-10.

I can set the system to

Subsection "Display"
Depth 24
Modes "640X400"

or to
Subsection "Display"
Depth 8
Modes "1024x768"


The Driver "accel"
Device "RIVA TNT2"
Monitor "DELL P991"

Is there any way through the software that I can enable 24 colors on a 1024x768 screen size?
Going through Xconfigurator doesn't work.

When I purchase systems, how can I tell whether the monitor and system is capable of 24 colors on a 1024x768 screen?

Thanks for any information.