rear drum brk on passenger side locking up solid, how to fix?

Sounds like either the hand brake cable is not releasing or a return spring in the brakes has come apart.Jack up and support the vehicle and closely inspect the brakes. There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online