PHP code Problem

Hey I'm having problem with my code I cant get it to work. Can anyone please help?

The error I keep receiving <br />
<b>Fatal error</b>: Class 'MySQL' not found in <b>C:\Websites\rob\bluvision.org\ajax\getchatdata.php</b> on line <b>5</b><br />

It can be viewed at http://www.bluvision.org/ajax/chatlogin.php

I will give you the files if it will help you solve the problem just email me at rob@bluvision.org thank you very much.

Please help it'd be greatly appreciative :)

Thanks!!

-rob

Welcome here!

please read the posting guidelines --> http://www.codingforums.com/postguide.htm and especially the part about descriptive titles.
I think your problem is quite clearly explained by the errormessage...