SLMGR - license manager

I took the reference from other blog - slmgr tool is "Software Licence Manager" :"SLMgr Commands and Options

I’ve been dealing a lot lately with activation of Server 2008. It’s not been as easy as I’d like. In searching for some help, I came across a great article on SLMgr: SLMgr Commands and Options with Windows Vista Product Key Activation. This article provides a good look at the options with this SLMgr.ext tool. "

Vista DNS problems

I discovered DNS resolution problems on Vista Ultimate sp1. In my case it can not resolve DNS alieses from Active Directory DNS servers. The fix what I found - restart "DNS Client" service. Despite, I tried to set (DWORD)"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Dnscache\Parameters\NegativeCacheTime" to 0 it does not help.
P.S. After investigation it was DNS servers problem, DNS servers can not communicate with Internet (wrong gateway after firewall replacement) and Vista goes to External DNS for public names resolution. After what it tries to use external DNS for local names resolution and failed.