Huh....
Have you set PC1 Card 2 and PC2 Card 1 IP manually? If not, do this:
First make sure that you selected option that I mentioned above on PC1 Card1. I will attach screen how it looks, and option is in network settings for the card. Right click on the card, select properties and go to advanced.
When you done with that, make sure you can access internet on PC 1, and if yes, we will continue with setting rest of the stuff.
