Copy this code into a .PHP file (ie. wgettest.php) and run it on your server by browsing to it. This should locate the 'wget' file and other common alternatives (http://listmailpro.com/forum/index.php?topic=957.msg4257#msg4257) and tell us the file permissions, knowledge of which will allow me to offer further advice:
<?phpecho shell_exec('ls -al /usr/bin/wget*').'<br>';echo shell_exec('ls -al /usr/bin/curl').'<br>';echo shell_exec('ls -al /usr/bin/GET').'<br>';echo shell_exec('ls -al /usr/bin/lynx').'<br>';echo shell_exec('ls -al /usr/bin/fetch').'<br>';?>
Regards