In case you're still looking for the answer...
To install client.msi in AD, go to AD-users/computers, right click server, properties, then select group policy tab. highlight default domain policy and choose edit, under computer config, select software settings, and under software installation is where you want to place the client.msi. After all your installs are done, you'll want to remove this, as it will install every startup otherwise.
Al
"Be quiet Brain, or I'll stab you with a Q-tip!" (Homer Simpson)