[Samba] Groups with Samba domain controler or domain member

[bgforum2002 at yahoo.co.uk]

Does anybody know more about groups? I am considering switching from NT 
to Samba domain and have made some test. Unfortunately I need to make 
two additional groups, except Domain Admin (one of them is Domain 
Users). Is it possible to make that with the stable version of Samba? 
And another, but not so important (for now) question. Currently I have a 
Samba server, providing files and printers as a part of NT domain. It 
has winbind running, and I can list all NT rous and users in the samba 
box. However, manipulating group ownership on files works only with 
groups that don't have spaces in their names. Does anybody know how to 
overcome this?

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