how can i link my 2 windows 7 computers for transferring files to one another


I do hope there is a way to somehow link my computers since my external seems to not want to work today.  I want to transfer files and even windows live mail data that my desktop holds, as I will be solely needing the laptop for awhile.  I know people have something called home network or home group, but I really don't want this to be a public thing, just these 2 computers being able to transfer files to one another.
Thank you for any help.

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