Autodesk MapGuide Enterprise Developer

[#1]

hi, i want to create an overview map into basic web layout .have you got any idea please

[#2]

This is a tricky one.

1.   I would create a popup window or an IFRAME with a map inside. 
2. The map I would use is an OpenLayers.org map. 
3. I would set up event hooking in the MAIN map with http://trac.osgeo.org/mapguide/wiki/CodeSamples/JavaScript/AJAXViewerEventHooking to watch the map and send extents to the overview map.
4. If you wanted to get really tricky, you can draw a box using the OpenLayers.org API using the extents sent from step 3.

regards

gordon