Also here via umpteen links, and what dingsi said, basically. *g* I'm not an RPer but am linking to your post so more people who are can find it.

I also wanted to mention (in case it's useful) that esper has written this handy post for RPers on how to make your tables work on DW:

esper: dreamwidth, tables, and you - or - how i stopped worrying and embraced new html standards