Need an email for my domain

[FastCommerce Support]

http://www.google.com/apps/intl/en/group/index.html

The link above is to a page on Google for information on signing up for a gmail account that will "host your domain" for your company email. This means your email has your domain on it, but is powered by Gmail. Please check it out.

[Josie]

I am submitting my information in order to get an e-mail for my domain via google, but I don't have the control over my DNS records as they required because I bought the domain through FastCommerce. How You can help me?

This is what said in google apps.

"Google Apps requires changes to DNS to properly set up services. Learn more
* I understand that if I cannot alter DNS records for my domain, I may impact my organization's ability to use Google Apps. "

Please I need your help.

Thanks
Josie