Easiest way to migrate WSUS to a new server

I need the easiest way to move the WSUS database and settings to a new server. We are getting new hardware.

I tried doing this:

http://technet.microsoft.com/en-us/library/ee822824(v=ws.10).aspx

What happens it is it tells me I need to download the "server migration tool" I cant download the powershell because the validation tool tells me its out of date and cant validate my Windows OS.

It also tells me to download "sql server management studio". I download it and run it then it tells me I need to get MS installer 4.5. So I go and download it then it gives me an error that "The updatebr.inf file is invalid".

I just need to get my updates and settings to the new server. Thanks for any help you can give.