What do U mean by "the profile shows an empty computer" ?
U can't see your desktop? and logs on automatically on your wife's user profile?
If so, your files are still there, U just have to go to C:\Documents and settings\Your_user_folder\ (you should see your user name, or a folder called admin) and to see your files just open the Desktop folder and your files should be there, (while beeing logged on your wife's user account)
If U want to go back to your user, try typing admin and press enter if the logging box appers on startup. Or U should also activate the Welcome screen so you could see all users; by control panel>users>change the way users log on and aff>use welcome screen.