The Independent Sector featured a great article on SOX:
"Created to rebuild public trust in the corporate community in the wake of corporate and accounting scandals, the federal legislation that has become known as the Sarbanes-Oxley Act requires publicly traded companies conform to new standards in financial transactions and audit procedures. As state officials explore ways to apply elements of the law to the nonprofit sector, BoardSource and Independent Sector offer the publication, The Sarbanes-Oxley Act and Implications for Nonprofit Organizations, which provides nonprofit leaders practical recommendations on promoting effective oversight of their organizations."
The article also includes a checklist for nonprofits and foundations.
