I have been working on Navision 4 SP1 since 2004 . From Retail Module , to sales to purchase to manufacturing to finance to payroll to replication , to manage more than 30 Retail POSs , to reach a very huge Navision 4.1 Project in 2008. Its great to follow all this project from point of start to analysis to test to implementation . Sometimes i have passed in very hard time and name it Dievision instead of Navision , But now navision started to be like the air i breath or the water I drink .Its great ERP . This is all... with following it from backup, Restore , to maintenance to learn the C/AL Language to Reporter designer...and still continue with Navision .