[BirdDog]

Get a good set of metric sockets - a mix of 1/4" and 3/8" drive.

2 good quality (or better) torque wrenches (Craftsman - good, Snap-on - better). A 1/4" drive for the small/usual stuff, a 1/2" for things like wheel lug bolts, suspension parts, etc.

Then the Boxster specific tools others have mentioned. That will depend on which model/year you have. For instance, someone suggested 10mm and a triple square for the transmission - right, if you have a manual transmission. If you have a tiptronic, you'll need (I think) a 17mm socket (for the drain/fill plug) and a 2X mm (varies) torx bit to get the pan off.

Someone suggested the 101 Projects book. Absolutely! It has a nice description of general tools you will need, and each project has a list of tools specific to that job. The cheapest place I found to get a new one was to order it through the Pelican web site - it can sell for up to twice that price on ebay.

With Christmas coming up, you might want to put a Craftsman multi-piece set on your list for Santa. Sears usually runs some pretty steep discounts on multi-piece sets between now and then.