MS Excel Expert Certification Guidance
 

1) Is the MS Excel 2003 Specialist Certification a prerequisite for taking
the MS Excel 2003 Expert Certification Exam?

2) Where can I get sample tests (Q&A) {preferably free} for the MS Excel
Expert 2003 Certification?

Or, where can I get practice exercises {preferably free} to prepare me for
the exam (other than those in the Benchmark Series - Excel 2003 Specialist &
Expert text book that I'm using)?

These might be too easy as they are ECDL / ICDL level, but try http://www.ca404.com/tests.html they have a number of Excel tests (free) and other Office apps as well... I also see some at www.gent.ie (click on their tests page).