Hi,
Just change the advertisement to run everything from the distribution point and don't make the advert mandatory. Advertise to the All Systems or something like that.
You will have to hit F12 to start the pxe boot after choosing network imaging, then choose the image and then it will run for you.
We do that here. You can't hide the advertisement from the "Run advertised programs" though. (unless someone has a way!)
Regards