My outlook 2007 delete box

If you accidently deleted items like Emails, contacts, calendar, tasks, etc from your mailbox using Outlook, you can recover them as they are first transferred to the Deleted Items folder of that mailbox. But even if you delete them from the Deleted Items folder you can still recover them. This feature is enabled by default in Outlook 2007 but if you are using 2003 then you'll have to modify System registry.
Enabling recovery of deleted items in Outlook 2003
1. Start Registry Editor(Regedt32.exe).
2. Locate and click the following key in the registry
HKEY_LOCAL_MACHINESOFTWAREMicrosoftExchangeClientOptions
3. On the Edit menu, click Add Value, and then add the following registry value:
Value name: DumpsterAlwaysOn
Data type: DWORD
Value data: 1
4. Close the Registry Editor.
Now when you start Microsoft Outlook 2003 you'll be able to see a new option- Recover Deleted Items in the tools menu.
Recovering deleted items in Outlook 2007:
1. In the folder from where you deleted the item, or in the Deleted Items folder, click
2. Recover Deleted Items on the Tools menu.
Click an item and then click Recover Selected Items
NOTE: If an item doesn't appear in the Recover Deleted Items dialog box then you can't recover it.

when this happen do not reinstall the office on the existing copy of
outlook on your system. Kindly follow these steps:1 Uninstall the office completly .2.Locate the office folder and delete it from where ever located. you can search the folder (start>search>files and folder>type office
in the search box).3.If it does not let you delete the folder kindly restart the system
and try to delete the folder.4.Once uninstall and deleted the folder then restart the system, and
re-install the office with SP2.This will resolve the issue.

when this happen do not reinstall the office. Kindly follow these steps: 1 Uninstall the office completly . 2.Locate the office folder and delete it from where ever located. you can search the folder (start>search>files and folder>type office in the search box). 3.If it does not let you delete the folder kindly restart the system and try to delete the folder. 4.Once uninstall and deleted the folder then restart the system, and re-install the office with SP2.This will resolve the issue.