Make the clicks Clickable -Vbulletin - USE PHP
Edit file functions_newpost.php (your root forum/includes)
1. Find this line:
PHP Code: 
$skiptaglist = 'url|email|code|php|html|noparse'; 
Change to:
PHP Code: 
$skiptaglist = 'url|email|php|html|noparse'; 
2. Find this line:
PHP Code: 
$text = preg_replace($urlSearchArray, $urlReplaceArray, $messagetext); 
Add below:
PHP Code: 
$text=preg_replace("#((http://)?(www.)?hotfile.com/[^ \n\r]+)#is",'[url]$1[/url]',$text); 
PHP Code: 
$text=preg_replace("#((http://)?(www.)?fileserve.com/[^ \n\r]+)#is",'[url]$1[/url]'',$text); 

3. Find this line:
PHP Code: 
$urlReplaceArray = array(
            "[url]\\2\\4[/url]" 
Change to:
PHP Code: 
$urlReplaceArray = array(
            "\\2\\4" 

4. Save & Finish

Now, when users make new threads, Hotfile and Fileserve links will be clickable links