, powered by Telmap, does the trick in a jam. , available only to Verizon Wireless subscribers, is also a viable option. But if you seek the best of the best, Navigator's the BlackBerry app for you.

TeleNav's mobile GPS apps goes by many names; it's ; to that carrier's users; and plain ol' TeleNav Navigator to the rest of the world. It costs US$9.99 per month after a free 30-day trial; that's very similar to the pricing of the additional navigation services with spoken directions. The various "flavors" of TeleNav are also available on a daily basis for $2.99 per 24-hour period. Navigator is currently listed for $49.99 a year on most U.S. carriers; both BlackBerry Maps and are free, but they offer no advanced functionality, such as spoken, turn-by-turn directions.

The TeleNav service works on most BlackBerry devices, including all the latest models, as well as a variety of additional smartphones, . And TeleNav Executive Director Hassan Wahla tells me an iPhone version is coming "very soon." (BlackBerry owners without GPS-enabled devices require an to employ TeleNav.)

TeleNav for BlackBerry: Directions from Calendar, Meeting Invites and E-Mail

How do you get from here to there with TeleNav? None of the options prove difficult. You'll find three common ways to enter a new address: 1) type an address on your BlackBerry; 2) speak an address and TeleNav will record it; and 3) create a MyTeleNav account on the company's website and send addresses to your device from a PC. (You can also employ the TeleNav browser plugin. More on that coming up.) From there, you simply hit the Get Directions button and you're on your way.