tedster - 4:19 am on Oct 8, 2006 (gmt 0)

If non-www has existing backlinks (having PR might indicate that), and with-www does not, you might consider using no-www as your domain and redirecting (301) from with-www to no-www.

I say "might" because pre-existing links could do you no good if they are off-topic for your new content. I think you need to research things a bit.