terribly sorry for the delay! It's finally fixed now!
This was actually my top priority of issues to fix, but it was more difficult to do simply because I didn't know exactly what was wrong, except that it was possibly a php issue.
I turns out that because of the change from a slackware box to rh9, and the different php versions, I needed to comment out some code in the phpwiki module that had to do with compression.
Anwyay, it's fixed and I've updated the permissions so that anyone can modify the wiki (used to be set to only registered users, but as I'm moving away from the postnuke registration system to the ipb forum registration, this was best).
enjoy!