PayPal Donate button

Hi everyone,

I am having some trouble figuring out how to do this on my own, so I thought I would post my question here. I was trying to add a PayPal donate button to my forum. I would like to have it be underneath the "Share This Page" box on the main Node list screen. I found the code on a different thread for embedding, but I am at a loss as to where to place the code. Any help that can be offered would be greatly appreciated!

One more thing, is there a way to embed the button into a forum thread? I made a sticky thread letting my members know that we are now linked with PayPal to offer paid membership, but whenever i posted the code in the thread, it didn't take and just showed as scripting in the message.