Hi, new here and definitely not a techie. Waiting for my XP version of the one. What does this really mean, pasted from specs: - WWAN8: UMTS/HSPA (High-Speed Packet Access) at 850/1900/2100 MHz and quad-band GSM/GPRS/EDGE (850/900/1800/1900 MHz), upgradeable to 7.2 Mb/s HSDPA and 2 Mb/s HSUPA (for 3G models) Does it means this only comes on "3 G models" which models are 3 G? Thanks