To zoom to extents, click the Result List tab on the Object Manager bar.
On the Result List
tab toolbar, click 
and select Zoom
to Extents from the shortcut
menu. When you zoom to extents, GeoVista automatically sets your map at a zoom large enough to display all your
queried data (Result
List tab) or all the objects on the selected layer (Layer
Manager tab). When you zoom to well, GeoVista keeps the same zoom scale, but positions the map so that your selected
well displays in the center of the Map View.
You can set the minimum size a map can zoom. For example, if you generate a query that only displays one well as its result, and you set Options | Mouse and Zoom Options to use a minimum scale or extent, then no matter how small your result set, the map will only zoom down to the size you specified.
What do you want to do?