Do you mean service account? role-based security is designed with user roles in SSP.
Steve Thomas, Senior Consultant, Microsoft
App-V/MED-V/SCVMM/Server App-V/MDOP/AppCompat
http://blogs.technet.com/gladiatormsft/
The App-V Team blog: http://blogs.technet.com/appv/
The MED-V Team Blog: http://blogs.technet.com/medv
The SCVMM Team blog: http://blogs.technet.com/scvmm/
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