Again, thanks for the help :). Sorry to bother you again, but this really is starting to bother me. I made a paint event, and put in the code
Dim p As New Pen(PenColour, PenWidth)
Dim g As Graphics = e.Graphics
g.DrawLine(p, XPrev, YPrev, XCur, YCur)
and nothign happens. Yet it works fine...