http://www.amazon.com/Bones-Speed-Cream-Bearing-Lubricant/dp/B000FDO2K6/ref=pd_bxgy_sg_img_b
all you'll ever need. and to keep them clean and in good shape
http://www.amazon.com/Bones-Skate-B...ef=sr_1_1?ie=UTF8&qid=1263346768&sr=8-1-fkmr2
i use industrial automotive brake bearing grease. its pretty hardcore