I am not sure that there is anyway of determining what values to use to get the form to open in that position.

You could put a temporary command button on the form that runs the following code and then position the form where you want it and click on that button and record the values and then use them in the Activate Event.

MsgBox Me.Top
MsgBox Me.Left
Of course that won't be of much use if you are creating a wizard that will be used by various users of various machines.

You might also take a look at the following page Chip Pearson's website:

http://cpearson.com/excel/FormPosition.htm

Another approach would be to give the use instructions to drag the form to the position that they desire and then have one of your command buttons write the Top and Left values to the Registry using SaveSetting and have a GetSetting routine in the userform Activate to get the Top and Left values from the registry and use them thereafter to automatically position the form.