Thanks for the info.

Acetronics:
As you have guessed i am ideed a beginner with PIC controllers i only have some experience with the 8051 family. I will certainly read the info you gave me.

comwarrior:
I'd reccomend if your PIC is going to be doing a lot of advanced maths then you'll definatly want to use a PIC18, the cost diference alone is not that much and means programs run a hell of a lot faster.
I originally thought that all PIC controllers had the multiply tool build in so i already bought the controller, but there isn't that many mathts so it should be doable. You learn from your mistakes, so next time i don't make the same mistake hopefullyhttp://www.picbasic.co.uk/forum/images/icons/icon7.gif.