Link to this website.
In case you would like to link to this site, here you can find several banners free to use. I would be glad if you could give me feedback if you do so. Thank you very much.
Large Banner, 468 x 60 pixel, 55 kb
Half banner, 234 x 60 pixel, 34 kb
Rectangle, 180 x 150 pixel, 35 kb
Micro Bar, 88 x 31 pixel, 14 kb
And this is a nice one, 180 x 360 pixels, 55 kb