I've had problems using the system call to pass the "net use" command. I can't get it to work just using "net use \\\\$computer ..." and I've had no success using system("net use \\\\$computer\\ipc\$...." No matter how I delimit the IPC$ parameter, it ignores the $. Very frustrating. I eventually came up with the use Win32::Lanman module used in the following manner (this example gets the OS Version from the registry):

use Win32::TieRegistry(Delimiter => "/", ArrayValues => 0);
use Win32::Lanman;

$host = "10.10.10.10";
$pass = "yourpass";
$user = "youradmin";
$domain = "yourdomain";

if(!Win32::Lanman::NetUseAdd({remote => "\\\\$host\\ipc\$",
 password => "$pass",
 username => "$user",
 domain => "$domain",
 asg_type => &USE_IPC}))
    {
    print "connect: Sorry, something went wrong; error: ";
    # get the error code
    print Win32::Lanman::GetLastError();
    exit 1;
    }

$remoteKey = $Registry->{
                 "//$host/LMachine/SOFTWARE/Microsoft/Windows NT/Curre
+ntVersion/ProductName"} or die "Can't read from $host. Error: $^E\n";
print "$remoteKey\n";

if(!Win32::Lanman::NetUseDel("\\\\$host\\ipc\$"))
    {
    print "disconnect: Sorry, something went wrong; error: ";
    # get the error code
    print Win32::Lanman::GetLastError();
    exit 1;
    }
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Hope this helps. If anyone has a more elegant solution, I'd love to hear about it!