Hi everyone. Long time lurker, first time poster. 
I just ordered a "OcUK GeForce 8800 GTX 768MB GDDR3" but since I'm a total newbie regarding hardware I'm a little lost right now. Some advice would be greatly appreciated.
This is my current system:
CPU: 2,00 gigahertz AMD Athlon 64 X2 Dual Core
Card: NVIDIA GeForce 7800 GTX
Motherboard: ASUSTeK A8N32-SLI-Deluxe
Memory: 3gig
Monitor: HP L2335 (23' widescreen)
I already ordered the 8800 but I'm not sure if I should upgrade anything else.
Should I get another CPU as well? Like a better dual core?
Will the card bottleneck in my current system?
Any particular reason to get a quad processor at the moment, and would I need a new motherboard for it?
Sorry for all these questions, but like I said... I'm a little lost with all this.
Thanks in advance!

I just ordered a "OcUK GeForce 8800 GTX 768MB GDDR3" but since I'm a total newbie regarding hardware I'm a little lost right now. Some advice would be greatly appreciated.
This is my current system:
CPU: 2,00 gigahertz AMD Athlon 64 X2 Dual Core
Card: NVIDIA GeForce 7800 GTX
Motherboard: ASUSTeK A8N32-SLI-Deluxe
Memory: 3gig
Monitor: HP L2335 (23' widescreen)
I already ordered the 8800 but I'm not sure if I should upgrade anything else.
Should I get another CPU as well? Like a better dual core?
Will the card bottleneck in my current system?
Any particular reason to get a quad processor at the moment, and would I need a new motherboard for it?
Sorry for all these questions, but like I said... I'm a little lost with all this.

Thanks in advance!