well my rear caliper seems to be seized, it was rubbing against the rotor while i was driving thought my muffler was hanging off at first but then when i looked the brake pads had shrunk and there were a lot of dust and metal shavings from the pads and rotors

so what should i do, how would i go about fixing this, and can i still drive to lets say a garage?

 

The same thing happened to me. Yes, you can drive to a garage, but you are greatly reducing the life of the brake pad with every mile (but it really doesn't matter, IMHO, because you should change those anyways, since you have the whole thing opened up). You can either pull the caliper apart and try to "fix" it by cleaning it up and seeing why it was siezed (why it wasn't traveling freely), or you can just get a new caliper, throw it on, put on some new pads (and maybe new rotors), and call it a day. Good as new.