I'm using Photoshop CS3 extended (working through a Scott Kelby tutorial in "The Adobe Photoshop CS3 book" quadtoning for richer b&w's, page 334), and was trying to load duotone options and when I go to select the preset...no files are visible! When I go into windows explorer and can see the .ADO files in their respective folders...however, when I open the LOAD preset window, only .ADO files are selectable and I don't see the duotone, quadtones, or tritones folders. Is this a bug? I'm using XP Media Edition on a reasonably robust desktop dell. Otherwise CS3 works great. Any info appreciated.

Thanks, Vance