during SQL Server Installation Show error like previous program installation created pending operations

Solution:

a. Click Start, and then click Run.
b. In the Open dialog box, type: "Regedit" (without the quotation marks) or "Regedt32" (without the quotation marks)
c. Click OK.

NOTE: Please make sure that you only delete the value mentioned, not the whole session manager key.
d. In Registry Editor, expand the following registry subkey:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager
e. On the File menu, click Export.

NOTE: In Microsoft Windows 2000, click Export Registry File from the Registry menu.
f. In the File name text box, type: "Session Manager Key" (without the quotation marks)
g. Click Save.
h. In the right-pane of the Registry Editor window, right-click PendingFileRenameOperations. On the shortcut menu that appears, click Delete.
i. In the Confirm Value Delete message dialog box that appears, click Yes.
j. On the File menu, click Exit.

NOTE: In Windows 2000, click Exit on the Registry menu.
k. Restart the computer.
l. Using the Registry Editor, verify that the PendingFileRenameOperations registry value is not available.

Note The PendingFileRenameOperations registry value may be re-created when you restart the computer. If the registry values are re-created, delete the PendingFileRenameOperations registry value again by completing steps a through j, and then run SQL Server 2000 Setup. Do not restart the computer before you run SQL Server 2000 Setup.




Ref: http://support.microsoft.com/kb/312995