Hello Squid Guru's

I installed squid 2.5 last year on our redhat 9 old version for restriction purposes only, yesterday I tried to replace the redhat 9 with CentOS 5.5 with squid 2.7 STABLEXXX, I want to try the transparent proxy settings on squid.conf by entering

httpd_accel_host virtual
httpd_accel_port 80
httpd_accel_with_proxy on
httpd_accel_uses_host_header on

I cannot find the HTTPD-ACCELERATOR-OPTIONS in squid.conf, unlike squid 2.5 it has that..

where can I input this settings???