Q6600 Overclocking ..

Overclocking on that board is not recommended and it's troublesome as noted in the following links however it can be done in most cases for a mild overclock but you'll need to google and find a guide for it if one is even out there.

http://www.newegg.com/Product/Product.aspx?Item=N82E16813130124&SortField=0&SummaryType=0&PageSize=10&SelectedRating=-1&VideoOnlyMark=False&IsFeedbackTab=true#scrollFullInfo

https://answers.yahoo.com/question/index?qid=20120530100903AAhFn4V

http://www.overclockers.com/forums/showthread.php?t=673167