Check here for info on creating addins, toolbars, buttons:

Creating and Installing Add-ins, Toolbars, Buttons
http://www.pptfaq.com/index.html#name_Creating_and_Installing_Add-ins-_Toolbars
-_Buttons_

To launch the application, assuming you know the full path to the exe:

Sub FireMeUp()

  Dim lRet as Long
  Dim sPathToExe as String
 
  ' Edit this as needed
  sPathToExe = "C:\somefolder\somewhere\MyProggie.EXE"
 
  lRet = Shell(sPathToExe, vbaNormalFocus)
 
  If lRet = 0 Then
      ' there was a problem launching the file
      ' deal with it here if you wish
      MsgBox "Ooopsie.  That was no fun!"
  End If
 
End Sub

Have a look here too:

ShellExecute Example
http://www.pptfaq.com/FAQ00479.htm

-----------------------------------------
Steve Rindsberg, PPT MVP
PPT FAQ:  www.pptfaq.com
PPTools:  www.pptools.com
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