[Leica] Film production stills help?

[mattmorgan1 at mac.com (Matt Morgan)]

Not sure if this is off topic: Basically I need some technical advice  
on shooting some unit stills on a documentary film we're making. I'll  
be using a Nikon D70 and also taking an M6.

Just a bit of background - I used to do professional stills on films  
over a decade ago. Quite experienced, but used a couple of Nikon  
F4s's and M6's. Those days are long gone, but I have to do it again  
using a digital source. I'll be backing up some on film with the M6.

My question is to do with settings on the D70 to get optimum quality.  
I really haven't learnt much about the camera as I use it as the  
usual spray gun for the kids etc.

So, the tech requirement is: the files have to be provided as both  
TIFF and high-quality JPEGs sized at 10cm x 15cm.

It also says that it should be scanned in at 100% at not less than  
300dpi. I presume this bit refers to film origination, not digital?

Apologies if this is all basic and obvious, but what quality, size  
etc should I set? Do I convert in Photoshop etc?

Any thoughts on the quality of the D70 and it's standard zoom lens?

Thanks in advance,

Matt