1. Use Pages to create an epub file. Load it at Pubit! for Barnes and Noble. That's the easy part.
2. Open the Pages file and create a Table of Contents with no page numbers. (If one or more items in the TOC have page numbers even though you've turned off the page numbers, don't worry about it. You can fix that in a later step.)
3. Copy and paste everything in the Pages file into TextEdit. This will strip much of the code that confuses Amazon and Smashwords' converters. If your Table of Contents needs changes, you can make them now.
4. Open NeoOffice. (Or OpenOffice or LibreOffice.)