Was messing around with some other stuff and ran into Calc not being set in the registry as I thought, so whipped up a small script to set it.
Should work both locally and remotely if you have Admin rights.
Requires KiXtart 4.23 or newer.

 
Break On
Dim $SO
$SO=SetOption('Explicit','On')
$SO=SetOption('NoVarsInStrings','On')
$SO=SetOption('NoMacrosInStrings','On')
 
Dim $Calc
$Calc = SetCalculator(@WKSTA,0,1)
;Only reads setting since Report is set to 1 
;If you do not supply a value for $Report then it will change the setting 
;0=Scientific 1=Standard 
'CALC is set to: ' + $Calc
 
Function SetCalculator($sComputer,$State,optional $Report)
  Dim $CalcSetting,$CalcState,$WinKey,$WinPath,$SetState
  $sComputer=IIf(Not $sComputer,'','\\'+Join(Split($sComputer,'\'),'',3)+'\')
  $WinKey='HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion'
  $WinPath=IIf(Not $sComputer,ReadValue($sComputer+$WinKey,'SystemRoot'),$sComputer+Left(ReadValue($sComputer+$WinKey,'SystemRoot'),1)+'$\'+Right(ReadValue($sComputer+$WinKey,'SystemRoot'),-3))
  If Not @ERROR And Not $Report
    $SetState=WriteProfileString($WinPath+'\'+'Win.ini', 'SciCalc', 'layout',$State)
  EndIf
  $CalcSetting = ReadProfileString($WinPath+'\'+'Win.ini', 'SciCalc', 'layout')
    Select
      Case $CalcSetting=0
        $CalcState='Scientific state'
      Case $CalcSetting=1
        $CalcState='Standard state'
      Case 1
        $CalcState='No value setting found - Standard state'
    EndSelect
    $SetCalculator=$CalcState
EndFunction