[peppernowa]

Примерно так делал:

bool bRes = false;
Process prc = new Process();
prc.StartInfo.FileName = dirDist.FullName + "\\" + fiSource.Name;
prc.StartInfo.CreateNoWindow = true;
prc.EnableRaisingEvents = true;
prc.StartInfo.WindowStyle = ProcessWindowStyle.Maximized;
bRes = prc.Start();
this.Hide();
prc.WaitForExit();