Graphic design : banners

I need a 200px x 200px banner and a 200px wide x 400px high banner designed to promote "my shopping genie" (Google it to get the logo) - to let users know that they can download the software for free, that they can save money (£ and €) on all online purchases, price comparrison etc etc Must be attractive and enticing to visitors. I need this done now, really simple job, but I do need it right away - BUT it must be a top grade job. Don't bid more than $30 as your bid will be ignored.