I must say Richard's recommendation of the Homeplug route isn't a bad idea. It might avoid glitches like the following:

Last year I foolishly tried to upgrade the firmware on my Netgear wireless router, thinking I might get my kids off my back ("Dad, it's taking me 12 hrs to illegally download Moulin Rouge - why?"). The net result was a t*ts up network, about 5 firmware reloads from various CDs, and about 20 support e-mails back and forth to the dreaded AOL (thank God I could still somehow get e-mails out from the home PC via Explorer). Took me 2 days to get back to normal - and I worked in IT for 30 plus years!

Mind you with wireless I suppose you CAN sit in the garden with your laptop - and swear at the illegible TFT screen!