Hi svk,
If you mean the "Insert Image" dialog in the "Make Template" function, please try this way.
1. Open file "CuteSoft_Client\CuteEditor\Dialogs\outereditorfull.aspx"
2. Find the below section
<CE:EDITOR id="OuterEditor"> </CE:EDITOR>
3. Add property UseStandardDialog="true" in it.
<CE:EDITOR id="OuterEditor" UseStandardDialog="true"> </CE:EDITOR>
Regards,
ken