The following code should work for you. I prefer to use the "in" method of Win32::OLE (which must be explicitly imported), which really just calls Win32::OLE::Enum->All(). Also, make sure to check the Class property of the objects, because in addition to the IIsWebServer objects, you'll normally get IIsWebInfo and IIsFilters, as well.

#!/usr/bin/perl -w

use strict;
use Win32::OLE qw(in);

my $hostname = shift;
my $service = Win32::OLE->GetObject("IIS://$hostname/W3SVC");
for my $server (in $service) {
    if ($server->{Class} eq "IIsWebServer") {
        print $server->{ADsPath} . ': ' . $server->{ServerComment} . "
+\n";
    }
}
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-jehuni