Number Crunchers Unlimited is a home-based business, founded by Bill Roman, that consults on small-business needs. It provides computer service, repair and instruction. Services include pre-purchase planning, price-shopping and comparison; installation and configuration of wired or wireless networks; data security and back-up; virus and spyware detection; and computer repair and maintenance. Number crunchers also provides instruction in any hardware, computer program or network set-up.