Cannot connect with ipw2000 module

Building a new kernel i couldn't connect annymore to my wlan-router, allthough i had the same configuration as my other kernel. Whell, almost, under Cryptographic options i build the AES cipher algorithms as module therefore the ieee80211_crypt_ccmp module could not find it , though i made a depmod. It gave me the errormessage:

ieee80211_crypt_ccmp: could not allocate crypto API aes

So apparently you have to build this into the kernel for wlan