hydropyro

I've had some help from a few of the guys on vent, but nothing has worked. My issue is that as soon as I click play on Net7 it'll flash a little dosbox and then nothing happens. The dosbox flashes too quick for me to see what it says. I'm using Vista 64bit. I've uninstalled and reinstalled twice to see if that would work. I installed with the one shot installation and with the multistep. The problem I think it might be is the certificates. When I have Net7 check the certs it says they're not valid or not installed. I have it install them, but it doesn't seem to do anything. I check them again and it says the same thing that they're not installed. Any help would be appreciated. Thank you.