Mandoble, got mine setup last night!
Using almost the same stuff as you, except:
two 512MB sticks of OCZ technologies CAS 2 333mhz DDR memory
I am using the built-in CL 6 channel sound (sounds as good as the Audigy I think).
Realtek lan, enabled and working fine.
High Point RAID (two 40gb Maxtor ATA133 drives striped with RAID 0).
GF4 TI4600 (overclocked)
CPU is as yet not overclocked, but gonna tweak it today
I upgraded the NVIDIA drivers to the 29.42's...very stable and got some frame rate increase in AH.
Love the USB SIGMA box...plug my CH gear in the front of the case now instead of the back (and still have USB ports to use in the back). No card reader either (that only comes with the Dragon Ultra Platinum mobo .... and costs $40 more).
Man this thing absolutely flies!!!
Dang, had to edit....
Your CPU temp is pretty high. I have an Arkua 7228 heat sink (a licensed copy of the Thermoengine) and I am running at 34-36C with a closed case.....and I only have 2 small case fans in it right now. I can get 30-32C with the case open.