[Samba] converting Linux users & paswords to Samba

[FTuzi]

Greetings all,
I have a bit of a problem whose answer I cannot seem to find anywhere.

I have a Fedora 5  system with about 300 users and 2 printers.  Samba is 
running on the sole server.  There are also about 2 dozen Windows XP 
computers in use, but there is no domain and no Active Directory.  All 
the computers are standalone.  Users desire to use the Samba printers 
and access their home directories in the Linux system.

I have setup and have Samba running fine.  Using Webmin, I converted all 
Linux users to Samba users.  BUT the passwords don't convert.  Since 
there is no Windows AD or Domain controllers, I cannot do authentication 
lookups from some other system since they do not exist.

I suppose I could make the Linux Samba the Domain Controller, but since 
the windows users currently do not log in, I wanted to avoid the extra 
work of setting up those systems.

My quesiton is - how can I convert both the Linux users and their 
passwords into one on the Samba Password backends?

Thank you.

Frank