|Well, if you wish to have both work at the same time and have a gateway address on both you have to use Linux or UNIX. Mac's might do it too since they're using a BSD (UNIX) based OS.|
If you're using a Windows based OS, the short answer is, you can't do that.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.