Welcome to the Forum!
Here are plenty of choices (LGA 775) for you: http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=100007627%20600007879&IsNodeId=1&name=LGA%20775
From this list, pick the one that has the most desirable features, best performance, best price, and best service, with respect to the area where you live. (possible warranty issues). Please read plenty of user reviews too.
When I was in your situation, I created an MS Excel spreadsheet and filled in the details for easy, quick comparison. Made my decision process easier. I even called Customer Service of some of the companies I had selected, in order to evaluate their response. EVGA, Corsair, and Linksys (wireless PCI card) came out on top.
I had decided on the i7 CPU, so I looked only at LGA 1366 motherboards. My system configuration is in my profile under "More Information"
Good luck on your product selection and have fun doing it!