Rust on the weatherstrip? Or do you mean the chrome moldings? If it's on the chrome moldings just take some .0000 steel wool (pronounced 4 ott) and polish the rust off. .0000 steel wool is the finest steel wool out and it works wonders on chrome & doesn't scratch it. If the rusts on the paint under then a good rubbing or polishing compound is needed.
As far as the clock, ther are 2 buttons that need to be held in (as Chris said with a pen) to set the time. (also hope you have the code handy for your radio if the battery went dead & if you have factory radio.