Using office automation on windows server 2008.
This issue bugged me for over a day and thought I would share it. Thanks Simone Malvassori
http://emalvass.blogspot.com/2010/01/how-to-use-office-2007-automation-in.html
In summary: 
- for x64 system is necessary to create the following folder:
 C:\Windows\SysWOW64\config\systemprofile\Desktop
- for x86 system:
 C:\Windows\System32\config\systemprofile\Desktop