Brake Rotors
There is no point in my trying to duplicate what is a great series of web pages concerning Do-It-Yourself brake work including changing pads, changing/flushing the brake fluid and changing the rotors. All are relatively easy DIY tasks well documented here.
Thickness
For both Boxster and Cayman and for years 1997 through at least 2007
As delivered
Minimum before replacement
Front, Base 24mm 22mm
Rear, Base 20mm 18mm
Front, S 28mm 26mm
Rear, S 24mm 22mm
Modern rotors are so thin to save weight (both for unsprung weight's influence on handling and for EPA CAFE reasons) that they are no longer resurfaced, just replaced. Replacing rotors is a relatively easy and straight forward task, just look up the instructions for replacing the pads and you'll see pictures of how to remove the calipers. Once that is done, you replace the rotors and replace the calipers. There is no reason to pay for this to be done if you have average mechanical ability and tools. Also consider eBay as a source of parts. Or ask on the PPBB forum where the current best deals are.
Porsche rotors come with the "hats" (center section) painted to prevent rust. If your aftermarket rotors aren't, consider painting them with rust resistant paint.
Lots more information on brake parts here.
Index to Other Porsche Boxster Web Pages from Mike Focke
Links verified occasionally by REL Software's Web Link Checker