Possible to initiate configuration update on a system from the server

Hello All,

     I wanted to see if it was possible from the server to tell a system to send an updated configuration.  Currently we are finding that if a remote user logs on to the VPN they may get a different IP address then what our Console is showing.  So if they need remote help we are not able to connect to them.  The only we can do it is for the Configuration Update on the client by going to the settings and clicking the Update button or waiting the interval time which is currently 1 hour.  Is it possbile from the server side to force it to update so we get the new IP address and can then remote in a lot easier?  Thanks again everyone for all the help.