Including a php file in to a template

[iDudz]

Hi there folks, was just wondering if somebody could assist me with this.

I've followed vbulletin help threads about how to include php files in to templates by creating plugins.. but it won't work with the php file I need to include as it isn't actually in my directory as it's 'survey.php?sid=3D47C8'.

The help thread I followed is http://www.vbulletin.com/forum/showthread.php?t=173937

Obviously I could include the survey.php as that actually a file in my directory, but the ?sid=3D47C8 bit isn't.

Any help will be much appreciated, thanks!