I just tried to install a simple banner ad rotator for the heading of my website. Basically it just calls a set of links and banner images from a file in the directory. However when I load the site instead of the php it has this:

Warning: file(): open_basedir restriction in effect. File(/displayad.inc) is not within the allowed path(s): (/usr/local/psa/home/vhosts/steelcappedrecords.com/httpdocs:/tmp) in /usr/local/psa/home/vhosts/steelcappedrecords.com/httpdocs/adrotate.php on line 18

Warning: file(/displayad.inc): failed to open stream: Operation not permitted in /usr/local/psa/home/vhosts/steelcappedrecords.com/httpdocs/adrotate.php on line 18

Warning: file(): open_basedir restriction in effect. File(/linkcode.inc) is not within the allowed path(s): (/usr/local/psa/home/vhosts/steelcappedrecords.com/httpdocs:/tmp) in /usr/local/psa/home/vhosts/steelcappedrecords.com/httpdocs/adrotate.php on line 21

Warning: file(/linkcode.inc): failed to open stream: Operation not permitted in /usr/local/psa/home/vhosts/steelcappedrecords.com/httpdocs/adrotate.php on line 21

Can't find file
Check ad-count file (displayad.inc) exists
Check file with links (linkcode.inc) exists
Check directory (/) is correct

any ideas on why this is happening? I'm fairly new to PHP so any help would be much appreciated.