Hi, I am quite beginner with VB, so please do sorry for such obvious question

I have certain problem with positioning InputBox forum in Visual Basic.
I would like to position this form in right-bottom corner of my screen, but I cannot achive this. I would like to do this dinamicly, so it fit by itself whatever screen resolution or size client has.

The code I am using is quite simple:

Code:
Public Sub inputNumber()
    Dim Number As Double
    On Error GoTo ErrorHandler
    Number = InputBox("Please insert Number", "NA", "", 0, 0)
    Select Case Number
    Case Is > 0
    MsgBox "Number is bigger then 0"
    Case Is < 0
    MsgBox "Number is smaller then 0"
    Case Else
    MsgBox "Number = 0"
    End Select
ErrorHandler: MsgBox "You have not provided number"
End Sub
Now, the Input Box form is positioned at the left-top corner.
Can anyone help me with this problem?
Thanks in advance