go on g-unleashed website search on it
Here's a link of a map: http://www.g-unleashed.com/index.php?jump=4 (save it on your pc)
See Related Link for a map and more information on How to find all 100 Hidden Packages.
obviously u dont find them all in one place...they are scattered around the map..look for a pic in google images..showing the locations..that will definetly help...
one is in a swimming pool