QUOTE(D3TOX @ Apr 24 2006, 08:52 PM)
Geforce 6600 256MB pci-e
3.4GHZ dual cpu w/ht
1GB RAM
Well there's nothing wrong with that CPU!
I also have a dual core CPU (AMD 4400+ X2), and I have a CPU/RAM indicator on the keyboard. I notice when playing that the CPU usage is about 50-60% at all times on average (equally divided between both CPU's).
I have no good knowledge of newer nVidia cards, but if you can afford it I highly recommend a recent ATI card. I have a X1900XTX (PCI-E 512MB), and it's simply amazing. It will take a long time before I'll need a CPU upgrade again, as the card does all the work.
I also have 2GB RAM. Before I installed the files discussed above the RAM usage was up to 65% after some time of playing, while now I have seen it at 75% after playing a few hours. So RAM seems to be quite beneficial when playing Oblivion as well, to avoid the pauses and high loading times.