Most of the configuration like changing upload frequency is done in the registry.
The registry keys for the gateway are stored in HKEY_LOCAL_MACHINESoftwareMicrosoftSystemCenterAdvisorGateway and the registry keys for the agent are stored in HKLMSoftwareMicrosoftSystemCenterAdvisorAgent. If you change anything in the registry keys you will have to restart the System Center Management services on the agent and the System Center Advisor Gateway services on the gateway server.
By default the gateway only uploads once a day to the Advisor cloud services. Now for demo purposes I’m going to change it to every 12hours.
Have a look at the following site http://onlinehelp.microsoft.com/en-us/advisor/ff962521.aspx that describes all the registry keys.