samba - Jun 2004 - What is the password for ADMIN$ ? Can we disable it?

Hi,

I am using Samba 2.2.8a as a file and print server. When I execute smbclient
with my server as parameter, I see all my shares and I also see IPC$ and
ADMIN$.

I am trying to find out

1. If I try to connect to \\MySambaServer\ADMIN$ from a windows machine, as
username/password dialog pops up. What is password for this?

2. Is there a way to disable the ADMIN$ share via smb.conf ? What are the
possible side-effects?

Any help will be appreciated.

Thanks and regards,

Rohit Wadhwa.