Is Mappoint what I need?

This is a really simple question I am a salesmen and I have a a lot of customer to visit, retail sotres, I am thinking on getting a GPS device to help me and visit more custromers in one day; a sales representative in a Office Max store told on getting a pocket PC and a GPS card, and a good map software. Mappoint is what I need?
Can I give to Mappoint all the stores that I need to visit in one day, so the software could make the calculation by itself and then the pocket PC with the GPS card, could tell on voice navigation which direction should I go?
Probably is a stupid question but is my business and for me is a really important one, I will really appreciate your help.

By the way, I didn't ask... which GPS card is more recomended??

MapPoint will definitely take your customer locations and find the best (quickest / shortest / whatever) route.

There are GPS interfaces although I haven't used them, so I can't tell you about their functionality. The "turn left here" voice stuff I don't know about either. MapPoint itself doesn't do that, but it is conceivable that someone has written a plug-in app to do it (eg. one that tracks that you've gone off course and then finds a new route and uses that).

For simple route finding, Streets&Trips would be a cheaper option. This has the MapPoint maps, but is geared towards route finding.
However, as a salesman, you might find MapPoint's extras beneficial. Lots of demographic data; support for territories; plot other data (eg. size/type of account as symbols/pie charts/etc at customer locations).


Richard