I can't change the email address associated with my Google account

If you aren't receiving an email with the subject 'Email Change Verification,' check that you entered the correct email address. Sign in to your account at https://www.google.com/accounts/Login and click Edit next to 'Email addresses' to review your settings

This troubleshooter will guide you through 5-10 questions, depending on the options you select.

http://www.google.com/support/accounts/bin/answer.py?answer=48598