I use Ilford Delta quite a bit have a mini review here:
http://photo-utopia.blogspot.co.uk/2008/02/ilford-delta-3200.htmlLike others have pointed out 3200 is the exposure index (EI) value not the ISO which is 1000. That shouldn't worry you though because ISO ratings are based on long tonal scale images (D Log 1.3) such as sunny days with shade and highlights.
With Delta 3200 you're more likely to be using it indoors with little or no light and certainly a lower scene brightness range so tonal compression is easily done.
The trick (if indeed it is a trick) is to expose for emerging shadow detail and then stop down two stops. This will give you a snowballs chance in h**l of getting shadow detail. I then develop it in Rodinal (yes I know I sound like a salesman for the black syrup) which at 1:25 and minimal agitation seems to give a compressed highlight and shadow detail.
I have managed to expose at EI 25,000 and get useable results with this combination:
Metering is the key, especially if your spotmeter only goes to 6400 ASA
The following is at 12,800 EI (notice the moonlight coming though the skylight)
I've tried all sorts of combinations with this film, and really feel I have arrived at a workable solution, there are limits of course you don't need much light–but you do need some...
No lightmeter here!