Most any knifemaker here on the forums can re-grind the bevel for you if you ask around, but if you take the time with some files, sandpaper and some elbow grease you'll take more pride in it, and who knows....the knifemaking bug may bite you and it could lead to making your own knives.
Just a thought.
*edit*
Before taking your blade to a grinder of any kind, even a belt sander used for making knives, practice on a scrap piece of steel and get to know the tool a little bit first.
You could ruin your blade in a hurry, and more ways than one with machines. I'd suggest taking the time and using the files and sandpaper.