Do I need to have XP Pro and Office 2003 Pro to practise?

in MCDST
I just got the books for both exams. However it says I'll need to have Office 2003 Pro and XP Pro installed to practise. It also states that I should use a spare computer. First of all, I only have one PC, secondly I use Open Office, and have XP home edition and I don't have the cash to buy Office 2003/2007 Pro. Any tips?
Comments
I know this sounds like a mess but you may wanna either acronis your system and then use the disks from the books your purchases or just use virtual box but since you are running home i am worried about the amount of ram but you could most likely use a very slimmed down vm
Dale Scriven
Twitter:dscriven
Blog: vhorizon.co.uk
the Microsoft Press Study Guides for the 70-271 and 70-272 exams come with a free trial version of XPP - which stops working after 120 days.
Amazon.com: MCDST Self-Paced Training Kit (Exam 70-271): Supporting Users and Troubleshooting a Microsoft® Windows® XP Operating System, Second Edition (Pro-Certification): Walter Glenn, Tony Northrup: Books
Thats ok you can just format the drive and reinstall it for another 120 days! It'll work fine
Dale Scriven
Twitter:dscriven
Blog: vhorizon.co.uk