hi jennifer. as i understand, your issue is that your lounge TV is too far away from the wireless router to get decent speeds over your wireless network. i was waffling on about a product earlier in the thread, and i think it would be a perfect solution to your issue, having had the exact same issue myself which i quickly and easily solved using this product.
the product is a "netcomm home entertainment connection kit"
it is basically an extension to your existing router. it looks like a four port non wireless router, it is small enough to install behind your tv. plug your TV into the new extension router with a LAN (blue) cable, and away you go. it uses the power points and electrical wiring in your house to connect the two routers and transfer data from the main router to your lounge. it doesn't matter how far away it is from the main router because it is a wired connection. so it will, in theory, deliver the highest speed your network can deliver all the way through to your lounge TV.
anyway. as you can see i'm terrible at explaining even the simplest of things. so check it out for yourself
here's a link to the product info. anything else you'd like to know feel free to ask.
http://www.netcommwireless.com/product/powerline/np203