I have a desktop and a laptop. Currently, only the laptop has access to the net through wireless connection. Because my desktop can''t connect to the router through wi-fi for some strange reasons, there's no way I can get internet working on it. I don't have such a long CAT cable, either, so my laptop is the only thing I can rely on. Is it possible to connect the desktop to this laptop, and then be able to use internet with my desktop through the laptop? Is it possible to use a crossover cable for this? Are there other alternatives other than that?