vicidial.org

HI Mat
I have getting a problem with vici, when I type "192.168.1.100/astguiclient/admin.php" or "192.168.1.100/vicidial/admin.php"
it says page cannot be displays,
but when I type "192.168.1.100/index.php" its open, its working fine before a couple of days but I cannot understand what happens with it so kindly help me out with this issue......

Check that the admin.php page exists and it is in your webroot in the proper location. You should also check to make sure you do not have two installations of Apache on your system and are running the wrong one.

have you looked in your webroot folder?
on centos it is located on /var/www/html

how about try to issue locate admin.php