I need to connect a computer in another part of the house to a gateway/router in order to use the internet for online gaming. Motherboard has two gigabit ports. Hard wiring is not an option. Router has wireless G. Tried powerline adapter, linksys, with mixed success. Now it doesn't work anymore. Is there a better solution? Also gateway/router cannot be replaced as it's used for the TV and phone, AT&T U-Verse.