private void loadPRGToolStripMenuItem_Click(object sender, EventArgs e)
{
OpenFileDialog dlg = new OpenFileDialog();
dlg.DefaultExt = "prg";
dlg.InitialDirectory = "c:\\C64Files\\PRG";
if (dlg.ShowDialog() == DialogResult.OK)
{
myC64.LoadPRG(dlg.FileName);
}
}