Bringing up this old topic which I just found looking for "stylesheet-new" on the forums (guess it is finding me "stylesheet" too).

I have Quantity Price Breaks for Separate Pricing Per Customer installed and working great (I mainly use price breaks and quantity breaks, I have retail/wholesale but haven't used the wholesale class yet), if anyone needs help I'll do my best.

The one I have installed is the one linked by michael_s : http://www.oscommerce.com/community/contributions,3039/category,all/search,Price+Break+1.11.3