Saving Outlook attachments - default location

Changing the default location to save attachments in Outlook 2010,  from   http://support.microsoft.com/kb/252732

To Modify the Registry Setting

1. Click Start, and click Run.
2. In the Open box, type regedit, and then click OK.
3. Locate the following registry key:
   HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders
4. Double-click Personal in the right pane.
5. Change the value to the path you want. For example:
   C:\My Attachments, would set the location to the My Attachments folder.
   %USERPROFILE%\My Documents, would set it to the My Documents folder on a computer that had more than one user profile.
6. On the Registry menu, click Exit.
7. Restart Outlook.

When you open a new mail message and attach a file, the Insert File dialog box opens to the folder you have specified.


Also see:
http://social.technet.microsoft.com/Forums/en-US/outlook/thread/69a963e1-a2f4-44a4-b338-6fd3bc7c6030/

http://www.sevenforums.com/microsoft-office/126793-outlook-2010-setting-default-save-location.html