Shell Programming and Scripting

Hello;
some sites describe how to anonymize the squid the web browsing by inserting the following cods to “http.c” file that located on “src” directory.(when we install squid manually)
but I have installed putty via “yum” command ,
and the files and directories are not similar the manually
there isn't “Src” directory and also “http.c”
so please help me to find the related file that can I insert that anonymizer cods to it .



My VPS info :
Centos 5 default
The installed squid via “yum” is squid-2.6.STABLE6-5.el5_1
Its installed on etc/squid/
the file on this directory is :
cachemgr.conf
mib.txt
msntauth.conf
squid.conf.default
errors
mime.conf
msntauth.conf.default
icons
mime.conf.default
squid.conf


the codes :
httpHeaderDelById(hdr_out, HDR_USER_AGENT);
httpHeaderDelById(hdr_out, HDR_REFERER);
httpHeaderDelById(hdr_out, HDR_X_REQUEST_URI);
httpHeaderDelById(hdr_out, HDR_X_FORWARDED_FOR);
httpHeaderDelById(hdr_out, HDR_X_CACHE_LOOKUP);
httpHeaderDelById(hdr_out, HDR_X_CACHE);
httpHeaderDelById(hdr_out, HDR_VIA);

thanks in advance
Tom