Thanks ever so much for the replies guys. Seems everyone has their favourites with regards to the hard drives so i guess i should just choose whichever i like the look of best. With regards to what i'm gonna be using it for, well its going in the rig in my sig which is used mainly for gaming, using photoshop and adobe premiere.
Also, is it literally just a case of sticking the sata drive in and switching the pc on and using the xp disc to format/install windows? or is there something else i need to do to move from ide to sata.