I need help adding a paypal button to a category

[flash01]

Is there away to add a paypal button to the bottom of the category page on my site called client. If so, can someone tell me how?

I have already create the html code for the paypal button.
Here is my site: http://kdrmemories.smugmug.com/client


Thanks in advance,
Flash01

[jfriend]

Put it in your footer and hide it with CSS everywhere except in the category.