Dannyh01: I'm not sure how skilled you are with machines, so I'm going to make a basic assumption that you know a little about computers.
If you set a static IP to both machines (in network properties), you should be able to access them via ip: start->Run-> \\#.#.#.#\sharename. Be sure you have usernames/pwds/permissions configured, of course. If you use these interfaces for accessing a network, be sure that you remember your old settings, otherwise the interface will cease to work when hooked back up. If both machines are hooked to a network, and you can get an IP for both machines, typically you can access them via IP without a crossover.
Nodsu's advice is good too, but sometimes NetBIOS isn't cooperative for me.
Also, be sure your pin configuration on the crossover cable is appropriate. Some people hose this up, and even experienced folk can do it as a simple oversight.
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Hope this helps! PS- Welcome to Techspot!