The Win32::AdminMisc extension is used for a small variety of miscellaneous administrative tasks that we felt were not addressed (but needed) in the standard Win32::NetAdmin extension that comes with Win32 Perl from ActiveState.
The Perl Win32::ODBC extension was designed to to mimic the ODBC interface quite closely. This makes porting ODBC code from another laguage (C++, Basic, Pascal, etc) to Perl easier. Likewise if you are writing code in another language which uses ODBC then the use of this extension allows you to quickly prototype it in Perl.
It gives Perl scripts the ability to manipulate Win32 object's permissions and auditing. With this extension an administrator can modify permissions on files, directories, Registry keys, network shares and shared printers.
Win32 handles named pipes a little differently than UNIX does. This is the genesis for the Win32::Pipe extension. It provides the capability to create named pipes as well as spawn instances of them. This can make interprocess communication much easier. The Win32::Pipe extension also provides a Perl script with the ability to specify permissions and perform server side impersonation of clients.