I´m doing a complete software overhaul on my computer (welcome a new Mozilla Firefox user here), I want to find a replacement for MS Word, any suggestions?
You could try OpenOffice. I haven’t used it lately, though, so I don’t know what it’s like these days.
Abiword - word processor
OpenOffice - office suite
Much better than the older versions. It’s a bit odd about doing change tracking from Word, but I’ve never had another compatibility issue. With Open Office you also get a free spreadsheet and presentation program.
Unless you are using the newest Word features, go for it. You also do not get the damned paper clip.
That´s it, you´ve talked me into it! 
I´ve already downloaded it, I´ll install it later and report back.