Knife Sharpening

I have had this Calphalon Contemporary 8" Chef's Knife since around fall 2008 when Linens 'n Things was undergoing liquidation and I decided to buy a chef's knife on sale while a college student. It is not a bad knife per se, it is just not a great knife, and you can probably do better by spending a little more (I currently have two Fibrox® Pro 8-Inch Chef's Knife and they are much better knives, but I digress). Within the first year of ownership of the Calphalon Contemporary 8" Chef's Knife one of the people I shared an apartment with put this big nick in the blade by cutting a spaghetti squash on a granite counter top with no cutting board (do not suggest).