Changing a Local User Account on Windows 8.1 to an Existing Windows Account

In order to create a User Account with a name that is identical to the User Names used on my two other computers (Vista platforms), I created a Local Account on 8.1 with the same User Name. Now that the account is in operation, is it possible to link that profile to my Windows account? My primary log-in User Account on 8.1 is already a Windows account, but do I have to delete it first in order to link my new User Profile to the Windows account? I use Dropbox to link my three computers, and I would like to have the same User Name in place on all three computers.

Houston, Texas

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