I recently had the pleasure of sorting my list of hotel objects (whose glorious dropdowns you will hopefully soon see on our cheap hotels booking site: http://reservations.hotelscheap.org) and it was indeed a pleasure.

First, you start by creating a class for your specific sort.  In this case I'm sorting the list of hotels alphabetically on their name.  Each hotel has, naturally, a string property called hotelname.  Since string has a built in function called compare (and many types do have built-in compare functions),

Public Class CompareHotelName
        Implements IComparer(Of hotel)

        Public Function Compare( _
         ByVal x As hotel, ByVal y As hotel) _
         As Integer _
         Implements System.Collections.Generic.IComparer(Of hotel).Compare
                Return String.Compare(x.hotelname, y.hotelname)
            
        End Function
End Class

and then, since I'm using a new generics list (of hotel), I simply call the sort method, and pass in my comparer:   (and I call reverse after sorting, to reverse the order)

hotellist.Sort(New CompareHotelName)

If spec.SortOrder = SortOrder.descending Then
    hotellist.Reverse()
End If