According to http://openbsd.org/i386.html#hardware the Netgear WG511v2 Wireless PC card should work, using the malo driver:
"Marvell Libertas IEEE 802.11b/g CardBus adapters (malo), including: (G) Netgear WG511v2" But on a laptop with OpenBSD 4.1, the card was not (apparently) recognized, nor did the malo driver seem to load. This same system recognies a Netgear MA111 v1 usb wireless adapter, automatically loading the wi driver, and the whole system was installed by network that way, with no wired ethernet connection needed. So, does the malo driver need to be loaded manually, and is it even on the OpenBSD 4.1 network install cd (from cd41.iso)?