Congrats on scoring an iPad, you'll love it.
I'm not familiar with the MS Streets and Trips that you mention but I assume that it is some kind of navigation program or app. If so I would recommend that you go to the App Store app on your iPad and at the bottom choose "Category" and when they pop up go to "Navigation" in there you will find hundreds of apps. You should find something close to what you want or you are a very picky person. 😀
I use TomTom Navigator myself, some like it some don't its a personal choice. Have fun.