AFAIK it will get .tar.gz files (only) accross and decompressed, from
an HFS partition, but will not nescessarily put them in the right place,
which can be a headache if you're learning as you go along - even the
accompanying Read Mes get mislaid, and it's not worth the trouble.

have you looked at the *newbie - afterstep setup error* thread, for 
better alternatives and more info?

All the information I got on the Installer, Installation and Life
After Installation, was from the www.netbsd.org and www.macbsd.com 
sites. There's no mention of the Installer doing anything other than 
get you started.

hope this helps

Richard