[Samba] linux & windows 200

[Marc Chassoulier]

Hello,

I need to make a new network

I wan't if is possible
1 linux server for mail,web and firewall
1 linux server for file sharing
1 application server on win2000 server(imposed with ms-sql)
50 workstation on win2000, NT, win98

1) the file sharing server can be the pdc ? Do I need 50 Cal on the WIn2000?
2) if first is possible , and I didn't need 50 CAL. MS-SQL need only one
licence or cal licence?
3) and win2000 can be BDC ??

Thanks for response
Marc CHASSOULIER