What is wrong in this code

I used code to divide a line into equal distant and resulted in picture as

http://img230.imageshack.us/my.php?image=dasdae1.gif

Code:

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Private Sub Form_Load()
    Dim X1 As Long, Y1 As Long
    Dim X2 As Long, Y2 As Long
       
    Me.AutoRedraw = True
    Me.ScaleMode = vbPixels
   
    X1 = 20: Y1 = 50
    X2 = 300: Y2 = 400
 
    Me.Line (X1, Y1)-(X2, Y2)

    Call divideline(X1, Y1, X2, Y2, 50)

End Sub


Private Sub divideline(X1 As Long, Y1 As Long, X2 As Long, Y2 As Long, segments As Long)
Dim i As Long
Dim dy, Y As Single
Dim dx, X As Single
  dx = (X2 - X1) \ segments
  dy = (Y2 - Y1) \ segments
  For i = 0 To segments
    Circle (X1 + dx * i, Y1 + dy * i), 1 'or whatever
    X = X1 + dx * i
    Y = Y1 + dy * i
    List1.AddItem "X = " & X & vbTab & "Y = " & Y
  Next i
 
End Sub

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I cannot see the picture so this is a guess.

Use the floating point division operator /, not the integer division operator \

dx = (X2 - X1) / segments
dy = (Y2 - Y1) / segments