Not to be too picky, but I don't beleive your phone has GPS capabilities...I believe like the iphone it uses cell towers and/or wifi to locate itself, if its in an area with suitable signals, not GPS.
sf - this may have been true in the past and for the iPhone itself, but Android phones most definitely do indeed have a dedicated satellite GPS capability.
My Android phone (Tmobile Mytouch 3g aka the HTC Magic) can give me positioning via GPS even when the phone is turned off (aka airplane mode)
Plus, there are GPS only apps out there as well.
It also offers Cell Triangulation as well...which is less intensive on the battery and fairly accurate in urban areas.