ncsa_auth modules in SQUID

I would like my squid web cache to authenticate my users on win 98 clients. Reading the FAQ on the squid site it says i need to compile the ncsa_auth modules into the SQUID, but I cannot find the source in the SUSE 6.2 distro I'm using. I download the source of Squid 2.2STABLE3 - the same as i've got running and follow the instruction on the Squid web site and get some error messages about can't find version.h Also the SQUID FAQ talks about finding squid in /usr/local/squid where Squid seems to live in /usr/sbin Help Alan Dawson