Consider this example. You define 'objloc' as a mappoint location object. You now use the Getlocation method to 'set' a location to objloc. Now that objloc represents a location in mappoint we will add a pushpin to the map and use 'objloc' to tell it what location to put the pushpin.
To extract the lat/lon here is a link to an article here at MP2KMag
A More Compact Method for Obtaining Lat/Long
http://www.mp2kmag.com/articles.asp?ArticleID=13 Code:
Dim objmap As MapPoint.Map
Set objmap = MappointControl1.ActiveMap
Dim objLoc As MapPointctl.Location
'Get the location of Los Angeles, CA, using latitude and longitude
Set objLoc = objmap.GetLocation(34.055, -118.24, 100)
objmap.AddPushpin objLoc, "MyPushpin"