from which dc can I update the schema

Hi,

maybe it's a naive question :)

I have to update my schema to install LAPS as per

https://support.microsoft.com/en-us/kb/3062591


I have a DC win2003 32 bits, with Powershell2 and .net 4,
windows 2003 domain level

To modify the schema :

I did install LAPSx86,

then I have to do this :

import the PowerShell module : Import-module AdmPwd.PS
then update the schema : Update-AdmPwdADSchema

however Import-module AdmPwd.PS fails with

Could not load file or assembly 'file:///C:\WINDOWS\system32\WindowsPowerShell\v1.0\Modules\admpwd.ps\ dmPwd.PS.dll' or one of its dependencies. This assembly is built by a runtime newer than the currently loaded runtime nd cannot be loaded


I can't find why that is,
also I can't upgrade to powershell 2 on win2003


my question is, can I install and run the same command from a different DC ( win2008 r2 ) that is not the schema master ?
or do the previous commands must be run from the schema master ?

thanks
francois