Wireless setup on RHEL 4

[superprad]

i'm trying to get my wireless set up after my kernel upgrade and it fails.

when i do ..
$/sbin/modprobe ipw2200
FATAL: Error inserting ipw2200 (/lib/modules/2.6.9-22.0.2.EL/updates/drivers/net/wireless/ipw/ipw2200.ko): Unknown symbol in module, or unknown parameter (see dmesg)

and the dmesg shows this ...

ipw2200: Unknown symbol ieee80211_wx_get_encode
ipw2200: disagrees about version of symbol ieee80211_txb_free
ipw2200: Unknown symbol ieee80211_txb_free
ipw2200: disagrees about version of symbol ieee80211_wx_get_scan
ipw2200: Unknown symbol ieee80211_wx_get_scan
ipw2200: disagrees about version of symbol ieee80211_rx
ipw2200: Unknown symbol ieee80211_rx
ipw2200: disagrees about version of symbol ieee80211_rx_mgt
ipw2200: Unknown symbol ieee80211_rx_mgt

my kernel is ..kernel-2.6.9-22.0.2.EL

please help

[falko]

Did it work before the kernel upgrade?
Is it a RedHat kernel, or did you compile it yourself?