Trouble connecting my Netgear

Hi there Guys

Not sure if you can help but anyway this is my problem.
My set up is a netgear range max wnr834b and a range max next wn511b notebook adaptor.
When I go to connect it won’t find my router but it does pickup my neighbours. If I go down stairs and unplug the router it will pick it up straight away. Sometimes if you keep refreshing the windows wireless screen for around 25 mins it will again pick it up.
It’s set for my router as the default one and automatically uses it first I am running MS XP.

Any ideas