If you are looking to overclock:
Get an Asus A7V or Abit KT7 and a Duron or Tbird.
If you are not looking to OC:
Get the MSI K7T Pro and whatever CPU fits your budget.
When searching for the mobos on pricewatch, I generally just put in the model (A7V, KT7, K7T, etc.). Searching for AMD, or Tbird will get a lot of worthless results.