Microsoft Remote Server Administration Tools (RSAT) for Windows Server 2008 (for Vista SP1)

Microsoft Downloads - Microsoft Remote Server Administration Tools for Windows Vista SP1 32-bit Edition (KB941314)

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Microsoft Remote Server Administration Tools (RSAT) enables IT administrators to remotely manage roles and features in Windows Server 2008 from a computer running Windows Vista with SP1. It includes support for remote management of computers running either a Server Core installation or the full installation option of Windows Server 2008. It provides similar functionality to Windows Server 2003 Administration Tools Pack.

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Now all I need is a Win2k8 installation to play with... :/

Still I know I'll need this in the coming months.