Dear,
want to clear all your address used in the past or some of them?
Use the following steps that are appropriate for your version of Microsoft
Windows to reset the Outlook nickname cache. After you restart Outlook,
Outlook generates a new nickname cache.
For Microsoft Windows XP
Exit Outlook.
Start Microsoft Windows Explorer.
On the Tools menu, click Folder Options, and then click the View tab.
Under Advanced Settings, select the Show hidden files and folders check box.
Click OK.
Click Start, point to Search, and then click All files or folders.
In the Search Companion box, type *.NK2 in the All or part of the file name
box.
In the Look in box, select your local hard disk drive.
Click Search.
Right-click the .NK2 file with the name of the profile that you want to
reset, and then click Rename.
Rename the file to profile name.bak, and then press ENTER.
Exit Windows Explorer.
Restart Outlook.
Microsoft Windows 2000
Exit Outlook.
Start Windows Explorer.
On the Tools menu, click Folder Options, and then click the View tab.
Under Advanced Settings, select the Show hidden files and folders check box.
Click OK.
Click Start, point to Search, and then click For Files or Folders.
In the Search for Files or Folders box, type *.NK2 in the File name box.
In the Look in box, select your local hard disk drive.
Click Search Now.
Right-click the .NK2 file with the name of the profile that you want to
reset, and then click Rename.
Rename the file to profile name.bak, and then press ENTER.
Exit Windows Explorer.
Restart Outlook.
