Wireless printing issue

[blacksun1520]

I have an epson photo R200 connected via usb to an imac running Snow Leopard. I also have a macbook running Leopard. When I print from the macbook to the epson, whatever I am printing does not fill the entire page. I have made sure to check that I have the media set to 8.5 x 11, standard printing, fit to printable area etc. but it continues to print in the center of the page at about 4 x 5.5. This is only happening when I print wirlessly (is that a word?) from the macbook, it works fine from the imac. If anyone can help me out I would appreciate it. Thanks.