How to adjust emergency brake?
 

My new house has a sloped driveway and I've noticed that when I park in it that my tranny makes a loud clanking noise when I put it in gear to leave. Of course I set my E brake before I take it out of gear when I park it but I notice that when I finally release the brake pedal that my car will roll back a but putting strain on the tranny so I figured my e brake is out of adjustment, is it an easy process to get it adjusted myself or is it something that needs to be done by a pro?