jpmiller,
I have a boxster that didn't come with keyless entry either. Just think of it this way - you got the no frills "racing package" - we're saving weight with no keyless entry, and no front door speakers
I ended up hooking up an aftermarket keyless entry system myself - it was easy, but i failed to disconnect the battery before removing the front drivers seat which set off my airbag light (which required a PST2 tool to turn it off).
Here is a link to a thread I started a while back
http://www.renntech.org/forums/index.php?showtopic=2880
- it may be possible to retrofit your boxter for use with a factory style keyless entry keyfob (all in one), but it'd be expensive.
Good Luck,
Larez2