The last people you can rely on to set up these DLPs properly is the staff of one of these major UK fridge shifters,
especially Currys (see other threads for lots on this). Most pictures on DLPs I auditioned were fairly poor when switched on, but when I demoed the sets I adjusted the settings using a THX Optomizer disc.
Cue "oohs" and "ahs" from the sales assistants...
There are lots of other variations to bear in mind apart wondering if they have set it up correctly. For instance, what was feeding the LCD and what was feeding the DLP?