It looks like you've downloaded the source rpms. These just download the source for you - you'll have to build and install them yourself.
Check
here for more information. Also, the Mandrake 9.1 rpms should work on 9.2 (I don't know myself, I use Gentoo).
You may also want to look into using forcedeth, which is an open source driver for nforce network cards.
Another thing - I've run into this problem in the past. Even though it's an nforce board, it doesn't necessarily mean it's using an nforce net card... so you may want to type:
cat /proc/pci | grep Ethernet
(the above is all one line, including the | )
getting the exact chipset (I couldn't find a driver for a realtek 8210 - maybe you or I made a typo)