Some additional instructions:
Porsche Boxster Shocks & Spring Replacement - 986 / 987 (1997-08) - Pelican Parts Technical Article
David,
I admire your want to do the DIY but please go slowly and make sure to be careful. The spring can injure you if things go wrong. So, follow the instructions, if you get stumped, stop and seek info. Posting here is the best option for the best response. DO NOT hang the brake calipers by the hoses. Tie them off with something to hold the weight off the hose.
Good luck!!!