Godaddy and Random File Plugin

I’ve searched and not found anything related so here goes…

I’ve used the Random File plugin on my site for a while, but now that I’ve moved the site to Godaddy (hopefully not a huge mistake) I’m getting the following error:

Fatal error: Call to
undefined function:
virtual() in
/home/…blah blah blah…/header.php
on line 20

here’re the lines in the header minus the < and >:

?php virtual(c2c_random_file(‘/wp-content/headertext/title/’, ‘txt’)); ?
?php virtual(c2c_random_file(‘/wp-content/headertext/description/’, ‘txt’)); ?

does anyone know what I need to do to get the “virtual” command to work? Or am I SOL because it’s some Godaddy issue…

Thanks.