fork vs. exec

[Sneeden]

I need to exec a process. I have been using:

Form fMain = new frmMain();
fMain.Show();

but of course that just forks another form. I want the child to stay alive after the parent has been killed.

Is there a way to do this without shelling itself? I mean, I suppose I could:

System.Diagnostics.Process proc = new System.Diagnostics.Process();
proc.StartInfo.FileName="path to self";
proc.Start();

How to you reference the app path? Like VB's app.path & "\" & app.exename?
Are there actual fork and exec type commands in c#?