You can automate the import from excel procedure.
If you are using vb.net you can try this. Create a button that fires this code:
Code:
Sub ImportFromExcel
'start new instance of mappoint
Dim objApp As New MapPoint.Application
Dim objDataSet As MapPoint.DataSet
'Set up the application
objApp.Visible = True
objApp.UserControl = True
'Let user create a data map
'This opens the import wizard.
'You can then choose an excel file.
objDataSet = objApp.ActiveMap.DataSets.ShowImportWizard()
'This just helps demonstrates the example
Dim oBox As MessageBox
oBox.Show("Quit", "Quit")
objApp.Quit()
End Sub
You should be able to adapt this.
Hope this is of some use.