Try something like this only replace your php button info with yours as I did mine here
<?
// Integrated Index Page (IIP) Version 5.4 (October 4, 2003)
// Updated to work with UBB.Threads ver 6.4 by Joshua Pettit -
www.joshuapettit.com//
// Copyright David Lozier 2002-2003. All Rights reserved.
//
// This software may be used and modified freely providing:
// 1. The copyright notice remains intact at the head of all files.
// 2. The copyright notice and link to my personal website is
// displayed at the bottom of all pages generated by the software.
//
// This software may NOT be distributed without expressed written
// consent from the author.
//
// The author accepts no liability for any loss or damages whatsoever
// incurred directly or indirectly from the use of this software.
// The author of this software makes no claims as to its fitness for
// any purpose whatsoever. If you wish to use this software you
// should first satisfy yourself that it meets your requirements.
//
// Email: []
[email protected][/]
// URL:
http://www.chattersonline.comecho <<<UBBTPRINT
$tbopen
<tr>
<td align="left" class="tdheader">
Paypal Donation
</td>
</tr>
<tr>
<td align="center" class="lighttable">
<p align="center">
<a href="https://www.paypal.com/xclick/business=admin%40reeftalk.com">
<img src="https://www.paypal.com/images/x-click-but04.gif" alt="paypal" border="0" />
</a>
</p>
</td>
</tr>
$tbclose
<br />
UBBTPRINT;
?>