Add registry key through group policy on windows xp machine

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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.