Hi Mark

Thanks. I think I was missing some of the supporting DLL's

Ken


>O= CREATEOBJECT("SIM.CHARGE") should work.
>
>You'll need hd.net.dll, interop.savcomm8.dll and log4net.dll in the same folder as sim.dll and sim.tlb.
>
>The tlb file should have been created by com.bat
>
>Those extra DLL's don't need RegAsm (which is what com.bat did to sim.dll)
>
>HTH,
>Mark