How to Register COMDLG32.OCX for Vista

1. Click the Windows logo, point to 'All Programs' then 'Accessories.' Right-click on 'Command Prompt' and select the 'Run as Administrator' option.
2. Enter the command 'regsvr32 %Systemroot%\System32\comdlg32.ocx' at the command prompt, where %Systemroot% is the folder in which Vista is installed (usually 'C:\Windows').
3. Wait for the system to confirm the registration with the message 'DllRegisterServer in C:\WINDOWS\System32\comdlg32.ocx succeeded.' Reboot the computer to make sure that the registration is complete.