I had wireless problems in my house untill I got airport extreme and airport express (which is plugged into the wall socket upstairs)and now where ever I am in the house the wireless signal is 100% plus I now have the added bonus of AirTunes,5ghz wireless (which is only delivered to devices that can handle it) and
My hard drive is plugged into the extreme for wireless saving and retrieval oh and wireless printing.
all in all apple have saved the day........again! it's also a doddle to setup and is pretty much idiot proof,
Annnnnd theres an app so you can control the wireless settings from your iPad or iPhone.
I know there's alot of apple haters but I'd say the airport products really are two of the best products they have.