Fresh install of Sarge, need some help

[Andrew Konosky <TerranAce007@comcast.net>]

I just finished a net-install of Debian 3.1 "Sarge," and I will be using 
Gnome as my default desktop since it runs better on my slow computer. 
First of all, how do I disable password protected shutdown so that users 
can reboot the machine?

Second, my video card is not detected right. It is an ATI Rage128 AIW. I 
had to manually add resolutions into the XF86Config-4, but I am only 
able to use 1024x768 and below, rather than the 1280x960 & 1152x864 I 
also added. This is fine, but I want the refresh rate at 75hz, but I 
only have the option for 60hz. How do I add in a 75hz refresh rate to 
the XF86Config-4, or even better, get Debian to detect my video card 
properly?

Third, I have no sound. I installed the Alsa packages, but it says that 
there are no detected devices. The sound is a standard PCI128D onboard 
chipset, so how do I set this up?

Thanks,
Andrew