Push new registry keys via group policy

Recently I have added registry keys in active directory and I need to push them via group policy instead of going to each PC to apply the new ones.
How can I push new registry keys (not modify existing ones) via group policy?

Note: I'm using Windows Server 2003 64 bit and my clients are running Windows XP Professional.

There is no built-in feature in Windows Server 2003 GPOs to configure custom Registry keys.

You can either use a startup/logon script to import a .REG file, or create a custom administrative template which will act on the keys you need to modify.

I solved but I didn't understand how it works!.I have windows 7 pro and I have installed administrative tools of 2008 in group policy management I created new policy so inside group policy management of windows 2008 there are new features for registry Computer Configuration --> Preferences --> Windows setting --> Registry from there you can push new policies but don't ask how I can use this feature and my windows server is 2003! if any one can explain to me?

Add this to your netlogon folder then create a logon gpo to run the batch. Change the registry key and location and name of file to whatever you call them.

REG QUERY hkcu\software\microsoft\windows\currentversion\run /v restart_sticky_notes
IF %errorlevel%==0 GOTO skip_reg_inport
regedit.exe /s \\server\registry_folder\regfile.reg
:skip_reg_inport