Yes, you can place affiliate program banner on my forum but must approved by me first, PM me for the ad rates. P.S. Your banner will be rotated with other banners.
I have no issue whether the banner link goes to an affiliate product page or to a product description page. the only issue is what is the product and how the product looks. I have a network of blogs so let me know what product you are trying to promote and how does the banner looks. If I liked the product then I can also write a review for your promoting product including your link. Reply me through PM as I hardly monitor threads.