Errror 2738 quicktime

SolutionThe iTunes and QuickTime Installers uses a technology called "Windows Installer", provided by Microsoft. If you see this error, it may be because the Windows Installer technology is unable to process the Visual Basic Script embedded inside the iTunes and QuickTime Installers.
Windows XP
You may resolve this issue by installing the latest VBScript engine from Microsoft.
If the VBScript is installed, it might not be registered within Windows XP. To re-enable the VBScript engine, follow these steps:
On the Start menu, click Run.
In the "Open" field, enter the following command and click OK.regsvr32 vbscript.dll
A message should appear stating that the "DllRegisterServer in C:\WINDOWS\system32\vbscript.dll succeeded."
Click OK and try installing iTunes or QuickTime again.
Note that the user needs to be logged in as the administrator or is a user with admin privileges for the step above.

Windows Vista
On the Start menu, click All Programs.
Click Accessories.
Right-click Command Prompt and choose Run as administrator from the shortcut menu.
When the User Account Control dialog appears, click Continue.
At the command prompt type the following:regsvr32 vbscript.dll
Press Enter on your keyboard.
A message should appear stating "DllRegisterServer in vbscript.dll succeeded."
Click OK and try installing iTunes or QuickTime again