Gmail or googlemail is automatically a Google Account.
If you have hotmail, yahoo, etc... Get a Google Account so you can use your hotmail, yahoo, etc... email address as the login for any google service (does not give you a new mail account or affect other email accounts).
Google FAQ Links
- Will I have to register with Google to use Google Docs?
- I can't access a document, spreadsheet or presentation that someone invited me to - what should I do?
- My spreadsheet is opening up blank. How do I fix this?
What if I don't want editing access?
That's fine. Just post your results in the challenge thread and someone will post it for you. The public versions are all in straight HTML (see links to the right) so you should be able to see the challenge spreadsheets to see how you and your team is doing.