Yes and for exactly that or two other like devices.

Ummm....


You don't use crossover cables and can't get them to work though? I'm confuzzled.

As Bill said,

Check the pin-out on both ends of your x-over. Pin 1 should connect to pin 3 (and vice versa) and pin 2 should connect to pin 6 (and vice versa). Pins 4,5,7&8 shouldn't make any difference but convention is to connect pin to pin.

I've seen people in the past confuse a cross-over with a roll-over. Check the pin-outs above to make sure this is not the case.

If the pin-out is correct use a cable tester (if available) to ensure there are no broken cores or dodgy terminations that could be causing issues at layer 1.

How are you configuring the two interfaces?
How are you testing connectivity?
Are there any software firewalls/filters running on either machine?

P.S.
I'm neither (nor certified with any other networking qualification), certifications don't always prove ability. Unfortunately there are a lot of 'paper professionals' in the IT industry. Throwing out certs as a basis of ability on a public forum where the validity of the certs can't be questioned/proven is meaningless. Remember:

No.. No.. you don't understand. I tried to connect two pc's. They say you're supposed to use a crossover cable for that. I did not get through with the crossover cable but got through with a straight-trough cable.

iSmith,

auto-sensing ports have their uses, however on enterprise+ level networks in my experience the auto-sensing has a habit failing an inopportune moments. As a result I recommend using crossovers where crossovers are 'meant' to be in a decent sized network.

Personally I'd be concerned that your sensing didn't notice they were attached by a crossover and turned the mdi switching off.

Then what the hell are they "auto-sensing?"

*edit - there's a "y" in "they" 

These 'auto sensing' things arewhat I was talking about here