Questions from colleagues and readers of my blog, here is more information about the SCJP exam.
The SCJP exam is a theoretical exam with very tricky questions, it test your knowledge of the Java programming language which is the foundation of all future certifications like Java Developer, J2ME etc.
To study for the exam I suggest buying the SCJP Sun Certified Programmer For Java 6 Study Guide (R409.00) book and spend about a year studying, do mock exams etc until your sure you can pass the exam - its very difficult!
For help you can visit JavaRanch
Which is a website started by the authors of the SCJP book.
Phone Prometric Testing Centre on 0800 99 11 20 two weeks in advance, before writing the exams to book. Pricing can be checked with them.