Not sure what you mean by "now my battery wont hold a charge for more than an hour"... does that mean the car runs for an hour before dying? Does it mean that the car will go dead after an hour of being off?

In any case, check your engine fuse(s) - you may have blown one out, causing the car to run on the battery instead of the alternator. Or, it may be another component that is drawing power from the battery when everything is off.

I can't help suggest anything more helpful without more specific info on what exactly is goign wrong.