Gone are the days of keeping endless paper records; most of today's bookkeeping is done completely electronically. Most of your clients will require you to have plenty of experience with a program like Microsoft Excel, Bookkeeper, Quick Books or Peach tree. You should first mention the programs that you are familiar with and then go on to describe the amount of experience you have with each one. If you are not familiar with the program used by your prospective employer, point out that you are very proficient with computers and that you will be able to learn the ins and outs of the software very quickly.