need new Antenna for my g54s router please help

[gsim]

hi guys looking to get a new 4 dBi Detachable High Gain Omni Antenna or what 1 will work best in my hose. cos i get poor signal in my house on my ps3 and my lappy with it.

please can someone advise me on what 1 is best


http://www.buffalo-technology.com/p...ries/4-dbi-detachable-high-gain-omni-antenna/

thanks gsim