That old chestnut,

Good lighting - try and create the look and feel your after by lighting your subject well, play to the good points of your particular camera, plug a monitor (or TV) into your camera while you shoot and light to that. DV will never look like film unless its lit well. If your camera supports the option shoot in "frame" or progressive scan mode.

Once youve got your well lit footage into premier boost the contrast slightly and maybe add a tiny bit of blur to the whole thing to get rid of the harsh digital edges whilst maintaining focus. Experiment with slightly desaturating your footage to get away from too-bright digital colour, try combining several layers of subtle effects rather than one effect cranked way up. Experiment.

Also check out other forums- I've seen one dedicated to obtaining film-like footage from DV cameras but I cant remember the adress, google should show you the way.

Tonga