Quote from website:
"From spring 2008, past papers for all academic qualifications will be available for download free of charge from our website.
The papers will be available on our new site,
EDEXCEL - advancing Learning, changing Lives, which is currently in development. This service will be available to all registered centres. In order to access the materials, you will be prompted to enter your centre number and a valid email address after you select a past paper.
We’re pleased to be able to respond to demand from centres by offering this service when our new website is launched next year. In the meantime, you can continue to order past papers in the usual way by calling our Publications department on 01623 467 467 or via the Edexcel shop, www.edexcel.org.uk/shop."
No help for this year I'm afraid but definately look out for this for future exam sessions. The Edexcel past papers can be a bit steep.