Powershell script to export all computers in domain, including OS and the OU they are in?

Hello,

I have a working script to export all computers and their OS, but I need to break the list down by OU for budgeting purposes.  Each OU is a different company basically so we can allot so much money per company for upgrading the OS.

Is this possible or do you have to export separate lists by OU one at a time?

Thanks,

Matt