Your domain name is your reflection on the World Wide Web. So choosing a name, which will project your Company's identity, product, services, interests. Even if you do not intend having your own company email address or Web site immediately, it is wise to reserve your domain as soon as possible, because another company may register your name before you do.

To find if domain name of your interests is available or not you can search in web site such as:

http://www.networksolutions.com
http://www.register.com