I have a customer who has an SBS 2003 server which was their only server for a number of years for about 30 users. We would like to replace the server with 2012 standard but we have a problem. 5 users are using an older version of Cougar Mountain Accounting software which the accountant tells me will not run on a 64 bit system. They are not using SQL or Exchange so this is the only obstacle. They are a not-for-profit and can't afford to upgrade to a newer version. Most of their hardware is donated. They obtain their software from this site when available; http://www.techsoup.org
What are my (low cost) alternative options?