Can you tell em how the macbooks are connected to the internet?
Also can you tell me are you just wnating to share files between the two machines and is there a reason you want to remove Apature?
Let me know
What type of router do you have and is there anything else you would like to move to the new machine such as iTunes etc?
That is what I needed to know
To remove Aperture can you drag the application itself to the trash then find and delete the following folders and files:-~\Library\Preferences\com.apple.Aperture.plist ~\Library\Caches\Aperture\~\Library\Application Support\Aperture\\Library\Application Support\ProApps\Aperture System ID \Library\Application Support\Aperture\
Once you have done that you may also wish to download a free application called Disk inventory X from here http://www.derlien.com/index.html this is a great tool that will show you what is taking up space on your drive.
Once that is all done can you tell me if you are looking to share files from machine to machine or just want the ability to move them from one machine to the other?
Do you have a Mobile Me account?
If not you may wish to take a look at what it can do for you http://www.apple.com/mobileme/
The reason I suggest it is that it would be the best way to keep everything automatically in synch for you so that even if you are on the road with your new machine you would be synched at all times, Also God forbid something happened to one of your machines while you were travelling, You would still have a full synch to the point when you had issues so you could recover from the issue
Let me know what you think
In that case you can just use the Mobile e to sync your mail, Calendar, Favourates, Notes etc.
As for your iPhoto I would look at something like Fatcats iPhoto Library manager http://www.fatcatsoftware.com/iplm/ this would allow you to synch your iPhoto library whenever you want so both macihes would have the same content.
More than welcome,
If I can be of any help in the future or if you need any help with your current project just let me know