Can I install MS 2005 SQL Server on my Window XP Home Edition with SP2 to study for the 70-431? Thanks.

I am planning to study for the MCTS 70-431. I am totally new to it. I got the MSPress book today, and was puzzled by the following points in the first chapter:
1) To complete Chap 1, You must have MS Window Server 2003 running on your computer on an NTFS file system(NTFS) partition.
Question: I don't have MS window Server 2000 or 2003. Can I use my PC with Window XP Home Edition with SP2 to study for 70-431?

2) You must have SQL Server 2000 installed to complete the upgrade section.
Question: Can I just download the evaluation edition (developer Edition?) or install the evaluation edition from the CD that comes with the 70-431 training kit to study for the exam?

3) We recommend that you use a computer that is not your primary workstation to do the practice exercises in this book because you will make changes to the operating system and application configuration.
Question: Can I use my primary PC with Window XP to do the practice exercises in the book? Should I worry about the possible change of the operating system and application configuration?

Any input or sharing of experience is greatly appreciated.