Lost in the steel canyons of Manhattan? Wend your way uptown and all across the country with Gate5’s Smart2go Mobile Navigator, which turns your cell or PDA into a street-savvy GPS and city guide. Voice commands tell you when to turn and point out cool stops along the way. Compatible with Nokia Series60 and 80 Smartphones, PocketPC, Treo 650, and PalmOS, among others. $349. www.smart2go.com