OpenBSD -> Access Point

I had just read an article in this month's SysAdmin
about using a FreeBSD box for an Accesspoint. Hmmmm,
I already have a OpenBSD box, and was wondering if anyone
has ever played with this before?

The article mentions PCMCIA cards with an external
antenna connector. I have never seen these before
and was wondering if anyone could give me a few tips
regarding these connectors and type of antenna to use.

I also like the idea of using IpSec between the AP
and the client in lieu of WEP. Neat stuff:-)

v/r
Mike