Option Explicit
Private lngTotal As Long
Private lngPoints As Long
Private intRandom As Integer
Private strButton As String

Private Sub cmdDone_Click()
    Unload Me
End Sub

Private Sub cmdHigh_Click()
    lngPoints = txtRisk.Text
    If lngTotal = 0 Then
        MsgBox ("Game Over!!!")
    ElseIf lngPoints > lngTotal Then
        MsgBox ("You dont have that many points to risk!")
    Else
        strButton = "High"
        lngTotal = RndInt(lngTotal, strButton, intRandom, lngPoints)
        txtRisk.Text = ""
        lblPoints.Caption = "Total Points = " & lngTotal
    End If
End Sub

Function RndInt(ByVal lngTotal As Long, ByVal strButton As String, ByRef intRandom As Integer, ByRef lngPoints As Long) As Long
    intRandom = Int(13 * Rnd + 1)
    If strButton = "High" Then
        If intRandom > 7 Then
            RndInt = lngTotal + (lngPoints * 2)
            lblMessage.Caption = "You win. The number was" & Space(1) & intRandom
        ElseIf intRandom < 8 Then
            RndInt = lngTotal - lngPoints
            lblMessage.Caption = "You lose. The number was" & Space(1) & intRandom
        End If
    Else
        If intRandom > 7 Then
            RndInt = lngTotal - lngPoints
            lblMessage.Caption = "You lose. The number was" & Space(1) & intRandom
        ElseIf intRandom < 8 Then
            RndInt = lngTotal + (lngPoints * 2)
            lblMessage.Caption = "You win. The number was" & Space(1) & intRandom
        End If
    End If
End Function

Private Sub cmdLow_Click()
    lngPoints = txtRisk.Text
    If lngTotal = 0 Then
        MsgBox ("Game Over!")
    ElseIf lngPoints > lngTotal Then
        MsgBox ("You dont have that many points to risk!")
    Else
        strButton = "Low"
        lngTotal = RndInt(lngTotal, strButton, intRandom, lngPoints)
        txtRisk.Text = ""
        lblPoints.Caption = "Total Points = " & lngTotal
    End If
End Sub

Private Sub Form_Load()
    Randomize
    intRandom = Int(13 * Rnd + 1)
    lngTotal = 1000
    lblPoints.Caption = "Total Points = " & lngTotal
End Sub