is there any way to get online without a wireless router?

i know there is a thing u can plug into ur pc`s usb port. but if i gotta pay 40 bucks for something like that i want something that will work with my wii,ds lite and my psp

im gonna use my eithernet cable for my 360 and ps3

but i need something for the wii.

any help?

A really really really really really long ethernet cable.

how about this

sony wifi link drive usb adapter.

says it works with psp ps3 ndsl and wii