Well the proper way to do this is to channel one scart down the wall and have a pro grade distro box at floor level, or on a unit etc...
When i sold these things we sold a Pioneer that had the tuner seperate, so you only had to channel or have one wire running down the wall...
Its expensive though unless you can plaster and re-do the wall paper yourself, as a channel is calved out the wall for the wires and then its a pretty skilled job to get the wallpaper back intact so it looks perfect...
I have seen it do, cost them as much as the TV Set, as it was the Pioneer that sold at close to 3k...
I have seen people use wireless senders to hind the wires, this is not the best way to get the most out of your tv though =)