generally the cheaper boards won't give you a whole lot of options for, say OC'ing, BUT they will get you by. look in the $100 - $200 range for a decent mobo. unless you want to spend $400 on one then that's up to you.
With that processor you don't really have too many options because you have a lower FSB. your FSB is only 800mhz. most common these days are the 1333mhz. So look on newegg and filter it down to the 800MHz FSB range and that will give you the best selection. I've always heard that ASUS makes great boards. a little on the pricey side but they will last a while
