There is technical difference between a logo and a symbol. A symbol is a conceptual graphics with your company name typeset together with but a logo incorporates your company name into itself.
No matter which one do you need, it's important to know where do you want to use it and what kinds of feeling you are trying to express in your logo.
So please take a few moments and think where do you want to use your symbol or logo. The following are typical examples.
Identity Printed Materials (Business Card, Letterhead and Envelope)
Full Color Brochures or Catalogs
Promotional Products (Pens, Key Chains and other Corporate Gifts)
Also take your time and think about your potential customers, what they appreciate to see in your logo and what kind of feeling you want to express. The following attributes are listed to help you. Remember your logo is an important part of your company's character, and well worth the time and money you spend. A great logo will make you feel good every time you take a look at it.
Simple or Complicated
Easy or Challenging to Read
Traditional or Modern
Natural or Artificial
Friendly or Serious
Luxury or Ordinary
Aggressive or Conservative
Corporate or Small Business
Fiction or Real
3D or 2D