squirrelmail display a blank page on centos 4.7 server

Hi I got a problem with squirrelmail,I installed it following this link:http://www.howtoforge.net/virtual-u...urier-mysql-squirrelmail-centos-5.3-x86_64-p5 and it's giving me problems,it displays blank page.everything seems to be working fine except the squirrelmail.What must i do?

 

Can somebody help me with the above thread,I'm using centos 4.7 server please help:
I 'm using imap :
courier-imap-4.4.1-1
PHP
php-cli-5.1.6-3.el4s1.10
php-ldap-5.1.6-3.el4s1.10
php-pdo-5.1.6-3.el4s1.10
php-common-5.1.6-3.el4s1.10
php-5.1.6-3.el4s1.10
php-mysql-5.1.6-3.el4s1.10
phpmyadmin-2.11.9.5-1.el4.rf
php-pear-DB-1.7.6-6.el4.centos
php-mbstring-5.1.6-3.el4s1.10
php-pear-1.4.11-1.el4s1.1


HELP WHAT'S WRONG WITH THIS squirrelmail.

 

Please try this guide instead: http://www.howtoforge.com/virtual-users-domains-postfix-courier-mysql-squirrelmail-centos-4.8-i386