Networking 2 computers together with independent internet connections?

I have 2 computers:

CompA

CompB

both have WiFi cards and can connect to the net fine independently.

both have NIC cards and i connect them with a cross-over cable, but they dont talk to each other, cant see each other....

what am i doing wrong here?

Networking 2 computers together with independent internet connections?anti virus scan

Well, first you might be trying to accomplish something that's unnecessary.

Consider: you have two computers, each of which can connect to a network just fine. That means one of two things:

1. Both machines connect to, or CAN connect to, the same wireless router;

2. Each machine is connecting to a separate wireless router, for some reason.

If the answer is #1, then there's no need to connect the machines directly, because both machines already have IP addresses on the same subnet via the router.

Find out the IP address for each machine (ipconfig in Windows, ifconfig in Linux and OSX) and you'll likely see they're both something like aaa.bbb.ccc.ddd, where aaa.bbb.ccc are the same and ddd are different.

At that point, you can hit one machine from the other using the IP address of the other machine (try "ping aaa.bbb.ccc.ddd", from machine A using machine B's IP address.)

If the answer is #2, you're in for a more complex configuration (that can't really be answered here without a lot more information about your system) because you're asking to connect two computers directly on one network, while maintaining connections from each machine to other networks (via the network card).