Try this. Go to Start > Run and type:
regedit
then OK. Navigate to HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\Curr entVersion\Policies\Uninstall and look in the righthand pane for the below value:
NoAddRemovePrograms
If it is present, doubleclick on it and change the value data to "0" (without the inverted comma's) and reboot.
If it is not present, try creating it. Go to Edit > New > DWORD value and name it:
NoAddRemovePrograms
When you have created it, doubleclick on it and set the value data to 0 and reboot.
If this doesnt work, it's possible that appwiz.cpl has been corrupted. If this is the case, your best bet would be to rename the existing file to appwiz.old and extract a fresh copy from your Installation CD.
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