Did a bit of reading, and it looks like if you setup the mysql tables (create the database and run createtable.php to create the tables), you can then import your data from postgres with this:
pg_dump -qxnd -f/tmp/data.dump databasename
mysql databasename < data.dump
I'm not sure how this exactly works, so you might just want to do a test and see if it actually imports correctly.
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Rick Baker
UBBThreads developer
