In your user-specific folder there should be a few standard folders like Desktop, Documents, Downloads (if running Leopard), Library, Pictures, etc. If you only have two items in Macintosh HD/Users, yours and a Shared folder not sure what may have happened. If you did rename the home folder you would have 3 folders in that Users directory, 1 with a typo you tried to correct, the active one with an icon of a house, and that Shared one. Anyone else have ideas?