By default all MS-Office applications will remember the last location you saved a file. This may be useful feature, but if you got a few commonly used directories there is a little trick that you can try to switch between them. Learn this in a few steps.

1. On the File menu, click Save As.
2. Select the directory you want to access quickly
3. Tools - Add to my places
4. The shortcut to that directory now appears on your sidebar and you can get to it instantly!
A Few Things to Note:
- You can reorder the items on the sidebar if you want with a right click by clicking Move Up or Move Down on the shortcut menu.
- This tip only seems to work with MS-Office applications.
- An alternative workaround you can use for other applications is to create shortcuts to your directories and place them on your desktop.
- The Insert Picture dialog box shows the My Places bar when you insert a picture from a file (Insert menu, point to Picture, From File command).
- Microsoft Office Outlook 2003 has the My Places bar only in the Save As and Insert Picture dialog boxes. To see the My Places bar in the Insert Picture dialog box, you need to have a message open.
Here, you can watch the demo of the trick.