Errors in setting up PowerCLI on Windows server 2008

Hello,
Today I tried to set up PowerCLI on a fresh installed Windows 2008 R2 server.
But I found the following error message:

Error:
VMware vSphere PowerCLI Installer Information
Error 1406.Could not write value InstallPath to key SoftwareVmware,Inc.Vmware vSphere SDK Runtime. Verify that you have sufficient access to that key,or contact your support personnel.
Need a solution.
Thanks in advance
