As far as I'm concerned, the only thing that forces me to use Windows or Mac from time to time is lack of Microsoft Office World, Excel and PowerPoint 2007 in Linux. In the web you can find info how to install it using wine in Ubuntu, but I could not find much about Fedora, especially Fedora 12. Here I present my experience of installing Office 2007 in Fedora 12. I must admit though, the what I'm going to write is based on my memory, so please feel free to comment if I skipped or made some mistakes.