That is how I solved my problem in VB.NET(using the free DotNetZip Library from here :
http://dotnetzip.codeplex.com/[
^]
For me it was hard to get the code working as VB.NET is something new for me. However, I hope that this will help others.
Imports System.IO
Imports Ionic.Zip
**********************
zipFileName = TemporaryFolder & FileName_TemporaryFolder & ".zip"
Using zip As Ionic.Zip.ZipFile = New Ionic.Zip.ZipFile
zip.AddDirectory(ArchiveFolder & sYear & sMonth & sDay & "\" & FileName_TemporaryFolder, FileName_TemporaryFolder)
zip.Save(zipFileName)
End Using