We report here on a first prototype developed using the Grid environment already available now in CMS i.e. LCG2. This prototype consists on a Java client which implements the GUI for Tracker Visualization and a few data servers connected to the tracker construction database , to Grid catalogs of event datasets or directly to test beam setups data acquisition . All the communication between client and servers is done using data encoded in xml and standard Internet protocols.
The client can display a tracker whose structure is read from the same server that provides the event data .In this way the client can be used to monitor a series of test prototypes in addition to the final complete detector.
We will report on the experience acquired developing this prototype and on possible future developments in the framework of an interactive Grid and a virtual counting room allowing complete detector control from everywhere in the world.