Can You Improve Your Good Credit Overnight? Absolutely.

Perhaps you've been told that you were denied credit because of an "insufficient credit file" or "no credit file" and you have accounts with creditors that don't appear in your credit file, just ask the credit reporting agency to add this information in future reports.
Your credit file may not always reflect all your credit accounts. Although most national department store and all-purpose bank credit card accounts will be included in your file, not all creditors supply information to credit bureaus: Some gasoline card companies, local retailers, travel, entertainment, and credit unions are some of the creditors that often don't.
Many credit bureaus will add verifiable accounts for a fee, although they are not required to do so. However, be aware that if these creditors do not report to the credit bureau on a regular basis, the added items will not always be updated in your file.
Here's an Example:

Suppose you had bought a car from a dealer 5 years ago. And the cost for your car was $12,000.00, which you have paid off in 2 years. If you can show on your credit report the auto loan you've paid off, that can dramatically change your credit report. Therefore, what you can do is contact the car dealership and ask that your account be reported.
Or you can request a copy of your auto loan payment history to be mailed to you so you can mail it yourself to the credit bureaus. It's also important to ask yourself why a certain account was not reported on your credit report. Usually it's because many small businesses avoid reporting to credit bureaus because it cost businesses money to report your payment history to credit bureaus every month. To put it simply, every business who wants to report their clients account payment history will have to subscribe to these credit bureaus and the subscription cost the business money.

Here is a sample Letter to Add Positive Information to Your Credit Record Date
Credit Bureau Name
Address
City, State Zip

To Whom It May Concern:
After receiving my recent credit report from your company, I noted that my credit report does not include information that I know is vital to providing a complete picture of me as a credit using consumer. Therefore, I request that you add the following account details on my credit file.
Creditor:
Address:
Account Type:
Date Opened:
Credit Limit:
Current Balance: (If it's an open account) If there is any fee for this service or for any additional information you might need from me, you can reach me at (your phone number).
Thank you in advance for your kind assistance.
Sincerely, Your signature Your Name
Address
Social Security Number
Date of Birth
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About the Author
Jim Partridge is a staff writer writing for http://www.allcreditcarddirectory.com/. The website is dedicated to providing free credit card options for people to consider. You have permission to publish this article electronically or in print, in your Newsletter, on your website, or in your E-Book, as long as the author's Resource Box is included with the article.