I am not a coder so looking for something simple that I can add both image with url and also add affiliate html code. An added bonus if the plugin also includes impression counts. I previously used Banner Garden http://wordpress.org/plugins/banner-garden/ but this is out of date and can no longer add new banners. Great plugin and too bad they didn't keep it current. I found Kento Ads http://wordpress.org/plugins/kento-ads-rotator/ which looks great and includes impression counts but does not let you add affiliate html code. You need the actual image and link but affiliate codes don't provide the individual image. Surprised a plugin like this is so difficult to find. What are all these other sites using?
OpenX is probably what you're looking for... Although I warn you - this is a sledgehammer - and you might be looking for something lighter.