How do I handle a notice for a Revived Judgement?

I have an account that is ALMOST 7 years old - it will be in less than 9 mos. I just got a Certificate of Mailing from the Collection Agency to "show cause why the judgement should not be revived". What should I do? The Judgement isn't even on my credit, and the Colorado Judicial System defines Reviving a Judgement as "a process to extend the time of the judgment prior to the expiration date of the judgment". I have to file a response with the court in the next few days.....