Integrating MS outlook into the portal

Hi

i am trying to integrate Ms Outlook office 2003.

Itried with integrating with MSoutlook web access using Exchange server.

Now what i want is, to integrate with my local MS outlook into portal.

Is there any difference in integrating MS outlook 2003 and MS outlook webaccess.

Can anybody can give detail information in integrating MS outlook office 2003 into portal.

regards

Usman