Focus stacking can be done in the wild
http://www.flickr.com/photos/lordv/tags/focusstack/
Here is a tutorial
http://www.flickr.com/groups/macrovi...iscuss/163367/
and here is the yahoo group for combinez
http://tech.groups.yahoo.com/group/combinez/
I've never had much success myself but then that is because I hand hold and move around the insect too much. You really need a tripod and focusing rail for this.