Sometimes, end users need to run older applications that don’t work properly under newer Windows versions. For this task, you may have used the Application Compatibility tool, Apcompat.exe, which is available on the Windows 2000 CD.

Windows 2000 Service Pack 2 (SP2) includes another handy tool that administrators can use in lieu of Apcompat.exe to configure certain compatibility options for applications. SP2 adds a Compatibility tab to the property sheet for a shortcut to an application.

Using SP2’s Compatibility tab
To install the tool, first install Windows 2000 SP2. Then, open a Command Prompt and execute the following command:

regsvr32 %systemroot%\apppatch\slayerui.dll

Replace %systemroot% with the path to your system folder; most likely, this will be c:\winnt. If the command was executed successfully, the dialog box shown in Figure A will appear.

Figure A
This dialog box confirms a successful install.

After installing the tool, create a shortcut to the application’s executable file. Right-click the shortcut and choose Properties. Finally, click the Compatibility tab, shown in Figure B, and use the options it provides to select the compatibility mode for the application.

Figure B
This tab lets you set compatibility modes with previous versions of Windows.