[seanm07]

The code for just the button is

<center>
<form action="https://www.paypal.com/cgi-bin/webscr" target="_blank" method="post">
Please enter the amount you would like to donate: 
  <input type="text" name="amount" size="6" value="5.00" />
  <input type="hidden" name="cmd" value="_xclick" />
  <input type="hidden" name="business" value="youremail@blabla.com" />
  <input type="hidden" name="item_name" value="Keep our forum running." />
  <input type="hidden" name="no_note" value="1" />
  <input type="hidden" name="currency_code" value="GBP" />
  <input type="hidden" name="tax" value="0" />

<input type="image" src="https://www.paypal.com/en_US/i/btn/x-click-butcc-donate.gif" alt="Make payments with PayPal - it's fast, free and secure!" />
</center>
</form>

Go into admin cp - style manager - edit style dropdown - find where you want it to go and put this code at the very bottom or somewhere you want it to go. warning you should make sure you can easily undo your actions incase you break something.