I have the Asrock DUAL VSTA on an other computer, and it was very quirky, has trouble soft rebooting, and is not compatible with my main SATA hard drive. I can deal with it, but I really have a hard time recommending a cheap Asrock board to other people. Also, I wouldn't recommend at 945 chipset for overclocking the C2D.
I have a Gigabyte 945 based motherboard and overclocking was limited to 2.7 Ghz on my C2D, even after the pin mod.