Is 7.0.3 codes works in Windows 2008?

7.0.3 on Windows 2008. Our company wants to upgrade our servers from Windows ’03 to ’08. Our Lotus Notes servers still run on 7.0.3 and we are slowly upgrading it to 8.5.1 FP3. We are also replacing some hardware. Our problem is that the servers cannot be advanced to version 8.5.1. I want to test if the codes in 7.0.3 works in Windows ’08 but it won’t even start. Has anyone tried this?
