Raid would do nothing for what you are asking. You actually have to set the ip addresses from each of the computers (through cmd prompt) to accept and send information via hdd's if you are on 2 different os's. However if they are both windows 7 (which they aren't) you are going to have to look up how to connect 2 hdd's via your router and ip's. Anyway all I know is that setting up raid would be MUCH easier than the ip/router thingy (even though they are completely unrelated). BUT, a few months ago i found a site that explained how to connect 2 hdd's via TEH INTORNETZ. So try and look that up. Also you need to post the laptop specs (os and such). good luck!