Upgrading from Unix to W.server

How can i create a backup of my current freePBX setup?
FreePBX 2.4.1.6 on Debian 4.
Can i use that in any way to help with a new freePBX setup on Windows server (not sure what configuration yet)

You will need a lot more than just a backup since FreePBX and Asterisk don’t support windows, just Linux and BSD for very brave souls.