Microsoft ends support for windows server 2000...

Support for Windows 2000 ended on July 13, 2010!

The Windows 2000 End-of-Support Solution Center is a starting point for planning your migration strategy from Windows 2000 to Windows 7, Windows Server 2003, Windows Server 2008 or Windows Server 2008 R2..

 check out more at: microsoft website here
now support is available through 3rd party softwares..so you can struggle through but better upgrade now

Some cool discounts to upgrade to newer versions is here


1Pk Oem Win Svr Std 2008 R2 X64 Dvd 1-4Cpu 5 Clt
Microsoft Windows Server Standard 2008 5 Client

Worried how you will master it now... dont worry check these cool and handy books at added discount just for you
 Mastering Microsoft Windows Server 2008 R2
Windows Server 2008 R2 Hyper-V: Insiders Guide to Microsoft's Hypervisor
Windows Server 2008 R2 UnleashedWindows Server 2008 R2 Essentials
Microsoft SQL Server 2008 R2 Unleashed