Is it just me who thinks that your banners comes in strange sizes?
Most webpages I visit follow the “standardized” sizes as showed here ( http://banner-sizes.kahi.cz/ or here http://www.designerstoolbox.com/online/banners.php ) including my own that use 88x31.
Would really love to see some banners in those sizes too =)
For the moment I use your 120x40 resized to 88x31 and with some new readable text since the resize 
First post :BNC must mention what a great firewall this is 