Feedburner script

Good evening!
I have a little problem... I was trying to make a partnership with a website in which they asked me to add their feeds in a widget. The problem is that none of us knows how to do that. They already sent me their Feedburner link and I tried to search all over the Internet for the right script. Nothing worked... Can you help me, please?

You mean affiliate button the code is simple

Code:


<a href="http://forumlinkhere" target="_blank"><img alt="Any text you like" src="http://imageurl="0"></a>

No, no, I can do that perfectly. xD
I mean something like this: http://j-musicpt.forumeiros.com/
See that widget called "OtakuPT" that is from Feedburner? I wanted to make something like that, but I don't know how to...

here the link to make feedburner https://www.google.com/accounts/ServiceLogin?service=feedburner&continue=http%3A%2F%2Ffeedburner.google.com%2Ffb%2Fa%2Fmyfeeds&gsessionid=3iJcckjSa_6RHw8ymDuYFA

Do I have to make an account? I already have the feedburner link that I have to use... It isn't mine. ^^"
I have to make a script with this link to use in a widget: http://feeds.feedburner.com/OtakuPt
Unfortunately, I don't know how...