insmod can't find ip_masq_ftp and others

i guess that says just about everything.. have a SuSE 6.1, 2.2.5 with 2 nics and a perm internet connection that ftp's cannot go through from the internal lan 192.168.1.0/24 i have ip_masq_ftp.c in /usr/src/linux-2.2.5.SuSE/net/ipv4/ on booting i get error that insmod cannot locate ip_masq_ftp as well as cuseeme, icq, raudio, ftp and others TIA Ian