@Thomas
Forgot one thing: you should use Samba V2.0.7 from www.amigasamba.org. Later versions don't work.
I have installed yesterday V2.2.5. Works very fine on my A1200. Mounts the various shares on the XP-box without any problem! And rather fast that is.
Have not yet tried it on my A1 yet, but I'm shure it'll work simmilarly.
Regards,
Jettah
P.s. I've got other worries with my A1200 currently. H/W worries. Jakkes!