samba - May 2002 - separate Win2k and XP profiles

Dear Samba gurus,

We would like to separate Win2k and XP profiles, since XP obviously uses
different registry settings and profiles just love to get  "confused"
...
Our first approach was to use variable substitution:

[profile]
        path = /profile/%a
        read only = No
        guest ok = No
        nt acl support = no

Both XP and Win2k returned "Win2k" and no more testing was done. Is
separation of profiles for these OSs at all possible ?

Thanks a lot in advance,
Uli