How to determine what motherboard I have

[Zanthred]

For future reference you can use this utility and it'll give you manufacturer/model info on your mainboard and CPU,

http://www.cpuid.com/softwares/cpu-z.html

They have a version that is a zip file if you don't like a self extracting executable.

I can vouch for this program also. Its a very lightweight program to get info on PC internal including clock speed / temps.