This is an big migration from an modified OSCommerce with roundabout 3,000 Products, 7,000 Customers and 8,500 Orders.
Magento is completly installed on the same server. The products contain special attributes, which have to be migrated, too. This is the first test drive to import the data. After setting up all the rest in magento there will be an additional job to run a cumulative update, after everything is ready - If the job has been made to our satisfaction you can get this additional job, too. Further there will be many small modifications to be made, which the worker can do too if he provides solid results.