nope that isnt, perhaps a wired computer would get faster download speeds over a wireless computer, for example i have a 2mb tiscali connection, my parents pc which is wired gets download speeds of 300kbs per second where as my wireless pc gets about 180kbs,
going wired wouldnt be wise but having a wireless router with one computer wired into that then having your other ocs wireless would be fine,
ok that probarbly dosnt make any sense, in your house have a wireless router with a computer cabled into that then all the rest of ur pcs wireless, the wireless pcs wont get as high download speeds as the wired pc but having all ur pcs wired wint make ur connection speed any faster