I need to know where to start...I just need to cover about 500 to 600 feet. Problem is I understand going through walls reduces signal/ I am wanting to go from my house to doughters house about 500 ft away. Her desktop computer sits in the middle of her house(mine is on the end facing her house). So I figure I have to go out my window, then 500 ft. away then through 2 walls to get the signal to her. Where should I start ? I am on a strict budget. I need to know what router, pc cards, etc. would I need. Never worked with wireless before. Please help...Thank You