FOR IMMEDIATE RELEASE

JEFFERSON CITY, Mo. – (December 3, 2009) – Summit Financial Solutions, Inc., an affiliate company of Computer Services, Inc. (CSI) (OTCQX: CSVI), today announced that Great Southern Bank has selected the Summit.NET image processing platform to be the foundation for its item processing services. Great Southern Bank is a $3.7 billion regional community bank based in Springfield, Mo. The bank serves customers in Missouri, Kansas, Iowa and Nebraska.

According to Lin Thomason, Vice President of Information Systems at Great Southern Bank, the choice to go with Summit.NET was an easy one. “Summit.NET is consistent with Great Southern’s strategy of surrounding our core system with best of breed integrated solutions to meet the bank’s processing objectives and customer requirements,” said Thomason. “Summit.NET is a 100% .NET-based comprehensive image platform, which was the key to our decision and since Summit.NET is replacing the other image vendors we looked at, we determined they were the best choice for Great Southern Bank.

“Summit.NET also has certified integration with our core and Internet Banking systems, which was a major factor we considered in our decision making process,” Thomason continued. “Having these interfaces installed at other banks gave us a comfort level that Summit will easily integrate its solutions into our processing environment.”

“We are very proud to add Great Southern Bank as a Summit client,” said Ron Thill, President of Summit Financial Solutions. “We believe the Summit philosophy to focus on our customers and provide the best solution and service possible will work well with Great Southern Bank’s growth plans. Great Southern Bank joins a number of multi-billion dollar institutions that have ordered Summit.NET this year. The product’s robust design and next generation features make it the best next generation alternative for banks that are still running on legacy image systems.”

About Summit Financial Solutions, Inc.
Summit Financial Solutions, Inc. is a developer and provider of payment processing software and services. Summit introduced the financial industry’s first integrated check imaging solution based entirely on Microsoft’s .NET platform. Summit.NET was the first system specifically built to handle the electronic image exchange requirements of Check 21. The Company’s open data and image capture, exchange, remittance and lockbox solutions are in service at over 600 banks. Summit, a wholly owned subsidiary of Computer Services, Inc., is based in Jefferson City, Missouri. For more information about Summit, visit www.summitfs.net.

About Great Southern Bank
With total assets of $3.7 billion, Great Southern offers banking, investment, insurance and travel services. Headquartered in Springfield, Mo., Great Southern operates 72 retail banking centers and more than 200 ATMs in Missouri, Iowa, Kansas and Nebraska. The company also serves lending needs through a loan production office in Rogers, Ark. Great Southern Bancorp, Inc. is a public company and its common stock (GSBC) is listed on the NASDAQ Global Select stock exchange.