Joomla 1.5/Virtuemart 1 to Joomla 2.5/Virtuemart 2

I have a clients website which has been compromised (Joomla 1.5) with Virtuemart 1. I've installed a Joomla 2.5 template with Virtuemart 2. Would you be a able to migrate the old to the new? If so, how quickly could you do it? Obviously I can give you access to both sites.

Update: I've managed to set up all categories and import all products using CSVi. The problem is the products aren't being assigned to the categories. Some of the product images are displayed however the category images aren't showing up.