Just D/L the auto evasion mod from my FF
theres a builders template in there and intructions
the only problem is that you have to resave it as
sh4 mis files which has been done.
then you are able to open them in sh4 mission ed.
and work away.
theres a few tips
and if you have questions pm me.
[edit]
Heres the original release thread for sh3
have a look at the pix.
http://www.subsim.com/radioroom/showthread.php?t=110982