wired and wireless connections

ok i have a laptop that i use at my house and i also have a desktop. now i usually use the laptop and i have a usb belkin wireless n card and a built in wired card is there a way to use the wired and wireless connections at the same time(wireless for internet and wired for transfering files to desktop)because as it is now when i connect the hard line to the laptop the wireless wont work.

please help