This project should be very easy for someone with good javascript knowledge
I have made the simple for below with the Fabrik extention from joomla
http://rrgroup.co.za/index.php?option=com_fabrik&view=form&fabrik=2&random=0&Itemid=4
I need the map field automatically filled in with a Blackberry GPS location which is looks very easy to do and they provide all the code
here
http://docs.blackberry.com/en/developers/deliverables/11943/BlackBerry_Java_Application-Development_Guide–863631-1109120059-001-5.0_Beta-US.pdf
The Fabrik joomla component has a section where you can add javascript to a field which should mak it realy easy to populate the form with the location data
The alternative option is to use the instamepper balckberry application API to populate the data.
Blow are some API samples from their website:
http://www.instamapper.com/api?action=getPositions&key=584014439054448247
http://www.instamapper.com/api?action=getPositions&key=584014439054448247&num=10&format=json
