Software Deployment

I build a msi package with admin studio for Realplayer Gold 10.5. After the installation I add the key

[HKEY_CURRENT_USER\SOFTWARE\RealNetworks\Preferences\UID]
@="305ba762b67da3df3ee86724d2ae8917be51358509cab1008fe6de346dfa17549747308d1fc84328|CMB8X"

to the registry to disable the registration process. But wenn I start RealPlayer it still asks me to confirm the email adress and password. How can I turn this off?

Thanks
Martin