I am buying win7. I have office 2007 but prefer my 2003. The 2007 word processor is actually a whole printing press, all I want to do is write letters.
I would go ahead and install and give it a try. It should be OK for basic use. I know there was something about 2003 that was quirky, but I can’t recall the issue at the moment.
Just so you know, Windows 8.1 is far superior technically and safer as well. You will eventually have to upgrade or go to Windows 10.