I was trying to get a Linksys WMP54G card going (another thread on the forum) but had also purchased a Belkin Wireless G Plus Desktop Card (F5D7001) as a backup plan. Thanks to Posmanet, this is now working for me. Seems that 'rmmod bcm43xxx' is the trick.
Before that I tried using the "firmware cutter" (bcm43xxx-fwcutter) to extract firmware modules. Limited but no ultimate success with that approach. Used .inf and .sys files found through the ndiswrapper wiki. Specifically...
http://biginoz.free.fr/linux/bcmwl5a.inf
http://biginoz.free.fr/linux/bcmwl5.sys
Haven't tried to duplicate and automate this setup so we'll see if it sticks. Also would like to see if I can get the bitrate over 18Mb/s.
Impulse Firecracker 24 Rev 2.1 2MB 24bit Graphics card for Amiga 2000 3000 4000
$175.00
Mini External OLED AMIGA Gotek Floppy Drive Emulator For Amiga 500/500+/600/1200
$37.41
SIDKick Pico Commodore 64 and 128 (C64 / C128) - MOS SID 6581 / 8580 Replacement
$19.99
Commodore Amiga 1080 Color Monitor Read Description
$150.00
Amiga 500 Gotek Custom Mount USB Floppy Emulator - Complete Kit with Gotek
$65.00
Utilities Unlimited Emplant for AMIGA A2000 A3000 A4000
$475.00
Commodore Amiga 1200 A1200 PAL Motherboard Recapped Works 1D4 US Seller Refurb
$399.99
Commodore Amiga KKQ-E94YC Keyboard for A2000 / A2500
$249.00
TeensyROM Cartridge for Commodore 64/128: MIDI, Fastload, Emulation, and Network
$65.00
$50.00