I keep loosing signal :[

I have had my macbook for about 4 years.I have never had this problem before.All of the sudden, I keep loosing my wireless signal.It works a little better if I am sitting right next to the router but still looses it. Nothing has changed,everything in my home is the same.My desktop internet works fine, its just the wireless. Ideas?

Sounds like your Airport card is failing. Take it to the Apple store to be checked out.