PF --> IPTABLES Conversion?

[Thomas T. Veldhouse]

Does anybody know if there is a conversion tool to convert PF scripts 
over to IPTables scripts?  I have a firewall that is working nicely 
using PF and FreeBSD, but I have a machine that I need to setup for a 
friend that has a similar configuration, but will be running Linux.  
Rather than learn IPTables outright, I was hoping that there might be a 
scripting utility to help get me 90% of the way.

Thanks in advance,

Tom Veldhouse