Brake Fluid Leak

    I have been having a problem with brake fluid leaking from my driver side rear wheel.  I initially thought it was coming from the fluid lines which lead me to putting stainless steel lines on the car.  The leak persisted and i recently noticed it only leaks when i am using my e-brake to park.  I believe it is coming from where the e-brake cable goes into the wheel??  Basically i am wondering if the whole caliper is bad or if there is just a seal that needs replacing.  Thanks any help or suggestions are appreciated

Replace the faulty rear caliper (common problem) with new or rebuilt one.   (I’d make sure to locate the leak first-wash and clean the wheel/caliper area).  

    Is it difficult to rebuild a caliper yourself.  i am usaully pretty good at this kind of stuff but does it require  a lot of specialty tools.  And if it is better for me to bring it to a shop for this what kind of bill should i expect for them rebuilding a caliper?

you can buy a repair/rebuild kit and all it is O rings so if you can get the size then its a simple replacement ( calipers never really fail its the seals that were out )

http://cgi.ebay.com/ebaymotors/BMW-95-99-e36-325-328-Rear-caliper-rebuild-kit_W0QQcmdZViewItemQQcategoryZ33563QQihZ010QQitemZ200199774843QQrdZ1QQsspagenameZWDVW

Would these work for an audi.  I kind of am having a problem finding a kit that i can buy with PAypal.  MY debit card is MIA and my damn bank it takes nearly a month to get a replacement.  I also thought thee may work since i think the audi uses firling brakes stock???

http://cgi.ebay.com/ebaymotors/Girling-Brake-Caliper-Rebuild-Kit-SP2501-3-Triumph_W0QQitemZ200201313142QQcmdZViewItem?hash=item200201313142