We do have a test server/database for the oscommerce and can have a test database for the magento system. This is for an adult toy site so if this is a problem please do not bid. We don't want any messing around on this job. If you bid we want a fast good job done or we will not be paying. This is a very important job and cannot be delayed or messed up. If you read our reviews you will see we are good to work for but we do expect a good/fast job.
What we are looking for is a full migration tool to migrate over all the products and all product info, customers, reviews, wish list and orders. I think thats all the essential info that we need to be pulled over. We may need others imported but we can deal with that later and of course if its a major thing we would pay extra.
The databases are MYSQL and our system is linux. We would prefer you to create a script or something for this so that we can do the actual transfer ourselves. Or maybe edit the areas in the oscommerce database so that they match the magento database and then export them? Not sure what the best way to do this is but you would know better then we would.
There is a tool for magento that is supposed to migrate over the oscommerce database this may give you something to start with but its out of date and we could not get it to work probably because we have custom info in the database.