Bankruptcy Law Questions? Ask a Bankruptcy Lawyer.
Begin by getting a copy of your ex-husband's bankrupcty filings to see if the loan was listed, unless you know for sure that it was. If it was listed he has been discharged of that debt and you have become responsible due to California community property laws. When you looked at your financial picture in 2000, you should have had this debt listed and considered. Also, pull a copy of your credit reports to see what is being reported as well.
I would consult immediately with a bankruptcy attorney and bring all judgment paperwork with you. They will continue to execute on the Judgment and garnish your bank accounts, and wages if possible.