Within Outlook, click on the Tools menu and click E-mail Accounts....

   Select the radio button next to View or change existing e-mail accounts and click Next.

   Select Microsoft Exchange Server by single-clicking on it. Click on the Change... button.

   At this window click More Settings...

   Click on the Advanced tab.  Click on the Offline Folder File Settings... button.

   Outlook stores offline folder information in .ost files.  By default it is called outlook.ost.  You can keep the default name and file location or change both.  Click OK.  If you decide a different name and/or location of the offline folder information, Outlook will ask if you want to create this new file.  Click Yes.  Click OK, Next, and Finish until you return to the Outlook main screen.

   Back at the main window, click Tools, Send/Receive Settings, Define Send/Receive Groups... 

   At this window, make sure All Accounts is selected and click Edit...

   By Default, The Calendar, Contacts, Deleted Items, Inbox, and Outbox synchronize with the offline folders.  Any other folders you want to synchronize, you must check the box next to the folder name.  In this example, "my sub folder" has been selected. Click on the Address Book Settings button.

   At this window, select the radio button next to Full Details.  Click OK.  Click OK, OK, and Close to return to the main window.

   If there are public folders/calendars that you work with, those too can be downloaded to an offline folder and synchronized by creating a public folder shortcut to the Public Folder Favorites folder

   Click the Public Folder you want to add as a shortcut to the Favorites folder.  On the file menu, point to Folder, and the click Add to Public Folder Favorites (you may need to expand the listing).  Whatever changes you make to the folder in your Favorites, will automatically be made on the actual public folder below.

   Back at the main window, click Tools, Send/Receive Settings, Define Send/Receive Groups... then with All Accounts selected, click Edit...  Now make sure that the public folder under your favorites folder is selected.  Click OK, and Close. 

   To complete the process, click Tools, Send/Receive, Send and Receive All. This will synchronize all of your folders so that there is a copy on your Hard Drive.  Depending on the size of your mailbox, this may take a while. Once this process is completed, you will be able to work with your mail without being connected to the UNH network.