How to migrate RT3 data from mysql to postgres?

I previously had RT3 running over mysql on a freebsd platform.

When I tried to get RT3 to run on mysql on Solaris 8 I had
no end of incompatibility problems, so switched to postgres instead.

But how do I now migrate my RT3 data from mysql to postgres?

Any tools available, or do I have to write my own?

Thanks.

Mike Husband <><
http://www.leadup.com.au/