PDM Toolbar grey-out on Win7 x46

I put Solidworks 2010 SP-1 on Windows 7 Ultimate x64 and my PDMWorks toolbar is grey-out. I can check parts in, but can not use this toolbar. Any thoughts ?.

Hardware.

Nvidia 750i SLI MB

Nvidia 8400 GS video

WD Velociraptor HD

Intel core 2 quad

4MB main RAM

SolidworksWorkgroup Pdm