Add registry key through group policy on windows xp machine   

I am trying to deploye one additional registry key for my entire desktops 
through computer based group policy.

The registry key which i want to add on computer policy is follow:-
HKEY_CURRENT_USER\Software\Adobe\Acrobat 
Reader\7.0\TrustManager\cDefaultLaunchURLPerms

Can anyboddy please advise me how do i add this registry key in GP for all 
my computers.

date: Thu, 12 Jun 2008 05:55:00 -0700   author:   Ved