I will be deploying to this area fairly soon and tech support at the website advised me to get in contact with an individual in order to get info on topo maps of Afghanistan. I have been through the website database of topo maps and no Helmand Province data. I have a Vista HCx and could use a hand. Thanks!
-Stuart
This one does and will work with that GPS:
http://www.gpsfiledepot.com/maps/view/182/