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First you'll need to visit http://www.freightquote.com and apply for an account. Visit their website and click the "Signup and Start Shipping" link shown in the picture below.
After you have completed the signup and are logged into the FreightQuote.com website you will see a section on their dashboard named "My API services". Go ahead and click on the "I would like to signup button" as shown below.
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On the Shipper Specific Options page there is a section for FreightQuote.com as shown below.
In this screen there are three fields to configure:
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