I've been writing about how you can use free templates created for Microsoft Office in OpenOffice.
BE CAREFUL WHAT TEMPLATES YOU PICK. SOME OF THEM ARE WORSE THAN USELESS.
This has nothing to do with what software you're using -- it just has to do with being careful.
I was just looking around for an example to use and came across a template chock full of nested numbering that DIDN'T USE THE NUMBERING TOOLS. The numbers and letters were all typed. 1, 2, 3, so that if you hit enter at the end of an item, you'd have to type in the next number, 4. If you needed to insert an item in the middle of a list, you'd need to RENUMBER EVERYTHING AFTER IT.
So be careful what you pick. Just because it's called a template doesn't mean it will help.