Dell’s Latitude Z600 ultraslim laptop isn't your average PC--and with a starting price of $2500, you probably wouldn't buy it for yourself. However, this sleek dream laptop (#6 on the PC World 100 top products of 2009) geared for a business executive has the added luxury of wireless charging (a $250 option).   The PC also has a separate ARM CPU--handy if you want to open your e-mail without booting up the entire notebook. Senior Writer Darren Gladstone tells you why this sharp PC opens a window into the future of computing.