I downloaded an ebook that gave info out on how to do it. The crazy thing is one could put a remote image up and collect stats such as impressions.
I don't know if I'd advise it though.. here's a summary
http://www.kboards.com/index.php?topic=120446.0
I don't know if I'd advise it though.. here's a summary
http://www.kboards.com/index.php?topic=120446.0