How do you create an HTML icon or badge?

[feelingsense2002]

I would like to create a little icon or badge like you get on Facebook, Flickr, Twitter etc. It's for a client's website so their suppliers can put their logo on their sites to promote it. Is there a simple way to create this, other than just linking a picture?

(PS: Please bear in mind I'm not a programmer, web developer or a techie person, just a web content editor, so may not follow everything. thanks)

[♥]

Create a linked image.

Code:
<a href="http://www.yahoo.com"><img src="img.jpg"></a>