The Apex Browse Utility requires the Microsoft .Net framework version 3.5.  It can be downloaded 
from here: 

http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=ab99342f-5d1a-413d-8319-81da479ab0d7





                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     