Display an interestial image with suscription box on Wordpress

This is what we need 1) I'm creating a promo for my site and i need to show an interestial picture with links and a suscription box The user will click on it, see every option and choose what he wants then he will add his data , confirm he wants to participate and subscribe... then show a confirmation message The e--ma--il collected goes to feedburner, if you can hide the capcha from feedburner and show like it comes from my own site.. better BTW the interestial ads will be shown only once per visitor and i need to have the option to ban some countries to see this ad. 2) Fix my rss to show the pictures from the articles