http://chris.pirillo.com/2007/05/17/the-error-code-is-2739/

For Vista users:
Registering the above might bring up an error with code 0×80004005. To fix:
1) Run cmd.exe with Administrator privilege (Start -> type “cmd”, then right-click on the cmd.exe and select “Run as Administrator, then click Continue on the elevation consent dialog). This will open a command prompt in C:\Windows\System32 (or wherever your system directory is).
2) Type regsvr32 jscript.dll - a popup will say successs.
3) Type regsvr32 vbscript.dll - a popup will say successs.