Star Office is free. You can download from
www.staroffice.com.
Edit link broken - try
http://www.sun.com/staroffice )
I suggest you download version 6 beta, rather than the release 5.X. Version 6 Beta is better IMO.
Here are other good ones to try:
www.Software602.com - They have a free Office suite - very good. Small download size.
http://www.e-press.com - Another free office suite. The free version includes printing out to a PDF file. I don;t like this one as much as the others.
Abiword - Freeware, find on google. A Good word processor if all you need is the Word processor part.
I personally use StarOffice on my home computer. Its slow (compared to Word), but has no trouble importing Word and Excel files, and does everything I need. You'll need a broadband connection to download.