Same login/password on multiple computers?

This is likely a novice question, but I'm about to upgrade an existing desktop to Win 7, I'm adding a new Windows Home Server, I'm adding a new Win 7 netbook, and have an existing XP notebook that I'm not planning to upgrade. I want all the systems to have access to the server but don't need (or want) all of them to be synced with the same files. All systems are used by me only - there's no one else in the house.

For my ease of use, can I create the same username/password on each system (and the server) so that I don't have to think about different logins when I use different systems? In other words, I'd like to be able to login as "fred" with a password of "123" (not my real username/password here - just an example) on each computer and on the server. Is that possible or will it cause problems?

Thanks in advance -

This website is not affiliated, owned, or endorsed by Microsoft Corporation. It is a member of the Microsoft Partner Program.