How to Change Colour Picker ??

When I first started using PS 6 when you open the colour picker - u have the big square box - then the narrow strip with arrows either side . Now When i first installed it - I had the full range of colours in the big square box and the colour selected in the big box to white shading in the narrow strip. I recently re-installed it and now the narrow strip contains all the various colours and which ever colour the arrow is on in the narrow strip - the big box only shows this selected colour and it in the millions of blends from white to black.

How can I revert to the old settings?

P.S. Sorry if this sounds silly - cause there was no easier way to put this

See the little radio buttons beside the RGB, CMYK, LAB, and HSB on the color picker thing? Click on each of those, and the color picker will change. The one you want is probably on HSB.

that was exactly it - it solved the problem - yes HSB was what I needed it on! So thanks!