To export them to excel you could just drag you mouse over them holding down the left mouse button to draw a rectangle. Right click in the resulting rectangle to get the menu. Choose export to excel.

If you want to be able to import back into mappoint or if you need the lat/long you can use Pushpin Tool (a plug for my program) which will export to excel and include the lat/long. Here is the link if you want to try it.

http://www.mp2kmag.com/downloads/pushpin.tool