Not too sure what you're trying to do. However here's an example of moving a PictureBox around a Form, automatically and manually.
Code:
Option Explicit
'
'Moving a PictureBox around a Form
'
' Assumes the following Controls are Drawn on the Form:
' PictureBox Named Picture1
' Timer Named Timer1
'
Private intCoOrds() As Integer
Private intMove As Integer
Private boOn As Boolean

Private Sub SetUpCoOrds(intMoves As Integer)
Dim intRndX As Integer
Dim intRndY As Integer
Dim intX As Integer
ReDim intCoOrds(intMoves - 1, 1)
'
' Generate intMoves number of random
' co-ordinates for the PictureBox
'
For intX = 0 To intMoves - 1
    intRndX = Int(Rnd * ((Me.ScaleWidth - Picture1.ScaleWidth) + 1))
    intCoOrds(intX, 0) = intRndX
    intRndY = Int(Rnd * ((Me.ScaleHeight - Picture1.ScaleHeight) + 1))
    intCoOrds(intX, 1) = intRndY
Next intX
End Sub

Private Sub Form_Activate()
Picture1.Top = 0
Picture1.Left = 0
Form1.KeyPreview = True
End Sub

Private Sub Form_Keyup(KeyCode As Integer, Shift As Integer)
Dim intLeft As Integer
Dim intTop As Integer
    Select Case KeyCode
        Case vbKeySpace
            '
            ' Start / Stop the automated moving
            '
            boOn = Not boOn
            If boOn = False Then
                '
                ' Stop
                '
                Timer1.Enabled = False
            Else
                '
                ' Start
                '
                Call SetUpCoOrds(50)
                Timer1.Enabled = True
            End If
        Case vbKeyRight
            '
            ' Right Arrow Key - move one picture width
            ' to the right
            ' Make sure it's still within the Form
            '
            intLeft = Picture1.Left + Picture1.ScaleWidth
            If intLeft > Me.ScaleWidth - Picture1.ScaleWidth Then
                intLeft = Me.ScaleWidth - Picture1.ScaleWidth
            End If
            Picture1.Left = intLeft
        Case vbKeyLeft
            '
            ' Left Arrow Key - move one picture width
            ' to the left
            ' Make sure it's still within the Form
            '
            intLeft = Picture1.Left - Picture1.ScaleWidth
            If intLeft < 0 Then intLeft = 0
            Picture1.Left = intLeft
        Case vbKeyUp
            '
            ' Up Arrow Key - move one picture height
            ' up
            ' Make sure it's still within the Form
            '
            intTop = Picture1.Top - Picture1.ScaleHeight
            If intTop < 0 Then intTop = 0
            Picture1.Top = intTop
        Case vbKeyDown
            '
            ' Down Arrow Key - move one picture height
            ' down
            ' Make sure it's still within the Form
            '
            intTop = Picture1.Top + Picture1.ScaleHeight
            If intTop > Me.ScaleHeight - Picture1.ScaleHeight Then
                intTop = Me.ScaleHeight - Picture1.ScaleHeight
            End If
            Picture1.Top = intTop
    End Select
    Me.Caption = "Left: " & Picture1.Left & " Top: " & Picture1.Top
End Sub

Private Sub Form_Load()
Timer1.Enabled = False
Timer1.Interval = 1000
Randomize
intMove = 0
End Sub

Private Sub Form_Resize()
Timer1.Enabled = False
boOn = False
Call SetUpCoOrds(50)
End Sub

Private Sub Timer1_Timer()
If intMove <= UBound(intCoOrds, 1) Then
    '
    ' Move the Picture to the next random Co-Ordinate
    '
    Picture1.Left = intCoOrds(intMove, 0)
    Picture1.Top = intCoOrds(intMove, 1)
    Me.Caption = "Left = " & CStr(Picture1.Left) & " Top = " & CStr(Picture1.Top)
    intMove = intMove + 1
Else
    Timer1.Enabled = False
    MsgBox "Finished"
End If
End Sub
When you press the Space key the program will establish 50 random co-ordinates for the PictureBox and move it every second. If you press the Space key again the automatic moving will stop and you can move the PictureBox manually with the Arrow Keys.