My wireless laptop is pretty far from the router; at least 2 floors and at times even brick walls and in the shed. But it's usually right next to my wired desktop PC. I only have one ethernet cable running down here, otherwise I'd wire the laptop too. Besides, I often need to bring the laptop elsewhere, and I wouldn't want to have my torrents switching networking adapters and losing connections everytime I switch from wired to wifi.
I happen to have a 7-year-old Linksys WMP54G PCI Wireless-G card that I don't use, and its got a nice big hefty antenna, which makes me think it has some nice transmit power too. I was thinking of putting it in the wired desktop PC, and having the desktop PC act as an access point, bridging the wifi with the LAN. Before I go and figure out how to do all that, would it even be worth it? I often need to use all of my available network bandwidth, because I use BTSync between the computers, but I only get about 2mB/s between my laptop and desktop, thats only double my WAN speed! I was hoping that having a wifi repeater would help out the speeds, but would the PC bridge act as a bottle neck and result in not any significant net speed gain?