Here's the error message when booting:
freepeter@localhost /sbin $ dmesg | grep ipw2200
ipw2200: Intel(R) PRO/Wireless 2200/2915 Network Driver, 1.2.2kmrq
ipw2200: Copyright(c) 2003-2006 Intel Corporation
ipw2200: Detected Intel PRO/Wireless 2200BG Network Connection
ipw2200: ipw2200-bss.fw request_firmware failed: Reason -2
ipw2200: Unable to load firmware: -2
ipw2200: failed to register network device
ipw2200: probe of 0000:02:03.0 failed with error -5
I've emerged ipw2200-firmware 3.0
UDEV version 115 r1
I've read the gentoo wiki,
I guess they solutions in Eric's blog is too old and I didn't try...(In fact, in UDEV-115-r1, there didn't exist /sbin/udev_run_hotplugd anyway...
And,
lsmod | grep ipw2200 got nothing to output,
also, rmmod ipw2200 & modprobe ipw2200 will tell me that FATAL: Module ipw2200 not found.
(I guess it's right, because in this kernel, IPW2200 driver is built-in kernel, not as module~~~)

