I need to extend the wireless range on a Linksys WRT54G v6. I know 3rd party firmwares can do it but I've never used one so I don't know which is best. I don't need to add a ton of features, I just to boost the power while keeping it rock solid. Would you also get a high gain antenna? Right now, the laptop that's having trouble is at the far end of the house and gets 1 bar of signal that frequently drops out. I pulled the router out from under the desk and put it up on a shelf and managed to get 2 bars but that's still pretty marginal.