Cannot Sync with outlook 2007

Cannot sync bb 8820 with outlook. error �no available message stores�
I am using desktop manager 5.01 and running XP SP 3.
I have tried uninstalling outlook and reinstalling and disabling outlook addins. However, when I reinstalled outlook my user name and information (calendar appointments were still there. I created anew user in outlook and I remanded the intelisync folder and BB create a new one.
This is driving me crazy. I do not have a data plan so Google claendar is nto an option at this time. Can some one please help?