Little bit vague. I have maybe totaly missed the point but i presume you mean you want a 3d gaming setup with something like 3 monitors? If thats the case then you can come pretty damn close.
Do you have the 3 monitors already? If they have to come out of your £1500 then im not sure its possible.
Do you have any preferance towards the AMD or Nvidia system?
I suggest you look into it more and learn more about what you want. Also a new generation of cards will be out towards the end of this year or at the start of next year so it might be worth holding on for those.
your looking at 200+ for each monitor, so ur left with about 900 for the pc itself. Graphics cards youll need either 2 nvidia cards, or possibly one ati (not sure how their 3d works), im really not sure youdf get a decent enough rest of pc to make it worth it, but ud be better going for a single 3D monitor setup for now, then expanding to 3 monitors later on
24" monitors are £170 meaning you will have just under £1000 if you go for them or almost £1100 if you buy the 22" ones, and even cheaper if you buy the non branded ones of course
to me its still not enough to get yourself something you wont regret in future, yeah itll be ok, but youll have wished you just got a single screen for now, saved up a little mroe and when you had the money invested on two more screens. Quality of the screens to me is just as important as the rest of the PC.