[Samba] Auto machine account creation

[Sam Silvester]

Hi everyone!

I've got Samba 2.2.5 installed in a network of 3 client machines all running
xp pro.

Everything works ok except "on-the-fly" machine account creation...from what
I've read I need something like

add user script = /usr/sbin/useradd -d /dev/null -s /bin/false -M $u

but this doesn't work for some reason.

Can anyone tell me what I'm doing wrong or haven't considered?

Thanks very much,

Sam.