I have 2 NICs in my computer one has DHCP the other I change static address to match phone system that I'm connecting to. Most of the time when I have both cards enabled I can't get to the Internet, I have had it working right but find that I have to disable 2nd card most of the time. Is there a way to tell system to always use the DHCP NIC for Internet no matter what 2nd card is doing.

Are you giving the 2nd card an IP in the same subnet as your DHCP range for the first card? Either that, or putting a default gateway on that second card would cause a problem for you.

If it's just an issue of overlapping subnets, just change your router to something like a 10.x.x.x range and you should be good to go.

Thanks Clinton that was the problem I had a default gateway on the 2nd card. This is sweet I can now have different systems in my shop and program them from my office computer. With the info I got from Aircom here I made up icons that changes the ip address of the 2nd card with just a mouse click. I was logged into 3 systems at once today
1 on internet at customers location
1 on my network and 1 on 2nd network