after installing RPM, did you modified you /etc/modules.conf ?
just have a look on : install nforce
You have to add in your /etc/modules.conf the following :
alias eth0 nvnet
alias sound-slot-0 nvaudio
alias usb-interface usb-ohci
What I did is to put some # before twin lines (like sound-slot-0)
After doing insmod, you can try with ifconfig to see if eth0 is up :-) .
For me, the network came up with my router's dhcp, and I could connect the web without any troubles. After that, I rebooted the system and it worked fine for network, sound and usb, but I can't say if usb2 is up or not because I just have some usb1 devices.
Let me know if you have usb2 working.