samba - Aug 2005 - Problems upgrading from Samba 2.2.1 to 3.0.14a

I have an old Linux Mandrake 8.1 system that has (had) Samba 2.2.1
running on it.  I've been trying to upgrade to a later samba so that Win
XP machines could connect.  (I was told in a previous question that I
needed to update so something later than 3.0 to allow XP machines to
connect).

So a couple of weeks ago I downloaded the source for Samba 3.0.14a and
compiled it.  (During the modules section I received a number of
undefined references and had asked about this problem but never got a
response).  After this, I finally did an install.  I kill the old samba
deamons and start smbd and nmbd  (they initially didn't start  I think
because did not find the smb.conf.  (didn't see how to set this in the
configure script).  Anyway started them with a -s pointing to the
smb.conf file I used for the 2.2.1.  

Samba appears to start.  Now on a Windows machine I can see the Linux
machine.  But when I attempt to log in, giving username and password.
(The same as I had used previously) I get an error stating that
"\\Machine_name is not accessible.  The network name cannot be found."

Does the smb.conf file need to be modified in any way from 2.2.1 to
3.0.14a?  Anyother thing to test.  I ran testparm on the file. Just get
a note saying that Service homes is flagged unavailable.