Moving OSCommerce install to another server

I currently have an install of OSCommerce on a web host, though the webshop is not (and never has been) live. It was worked on last year but had to be abandoned due to other commitments. It has had major layout changes since the vanilla OSC install, and also several community mods installed. I have had to change web host, which is now a Windows based server. What I require: 1. The latest 2.x version of OSC installed on the new host. I have tried to do this but it gives me lots of errors at the end and doesn't work. I need someone more competent with it than me! 2. The layout and installed mods copied from the old server to the new one. What I am trying to achieve is the OSC install 'as is' from the old server to the new. I would also like it briefly 'tested' to check that everything appears to be working. There will be more work if I am happy with the way this goes!