zuluclayman

Not sure with Mac but patterns are stored in the Presets folder - C>Programs>Adobe>Photoshop>Presets>Patterns on a PC.
So should be in Applications>Adobe (or Photoshop CS3)>Presets>Patterns on a Mac (?)
When in photoshop you can use the preset manager (Edit>Preset manager) to load the patterns from their location.
When using say paint bucket tool - in tool bar at top, drop down Fill menu, select Pattern then pattern menu should come up with your patterns there.