I'm using a Ralink wireless adapter and connected to a network is there anyway I can extend the signal around the whole house as the signal can only reach my bedroom?
What are the model numbers of your devces (router and wireless card), also how big is your home?
While you need a pretty good router located in the center to cover a standard 3-4 bedroom single story home, you should still have better range then 1 room.
The router is a Zyxel ES-108A V2 and the wireless adapter is a Ralink wireless usb adapter and I live in a 3 bedroom highrise flat and the signal is coming from the bottom somewhere and can only be picked up by the 2 front bedroom's.