Hi Keth,
Check this site [http://www.usmle.net/step1_books.html] ..here you'll find the two bichem textbooks we were talking about along with reviews,user rating etc
Remember that the books refered to are:
1. Lippincott's Illustrated Reviews: Biochemistry
by Pamela C. Champe, Richard A., Ph.D. Harvey
2. Clinical Biochemistry Made Ridiculously Simple (MedMaster Series, 2001 Edition)
by Stephen Goldberg
So when are you taking the part-1...is it in july,well so am I and wish you luck. 🙂