How can I use functions in MS Access?

The first beta of Microsoft Office 2007, referred to as Beta-1 in emails sent to a limited number of testers, was released on November 16, 2005. The Beta-1 Technical Refresh was released to testers on March 13, 2006. The Technical Refresh fixed issues in installing with Windows Vista build 5308. Office 2007 Beta 2 was announced by Bill Gates at WinHEC 2006, and was initially released to the public at no cost from Microsoft's web site. However, because of an unprecedented number of downloads, a fee of $1.50 (£0.79) has been introduced for each product downloaded after Wednesday, 2nd August 2006. The beta was updated on September 14, 2006 in Beta 2 Technical Refresh (Beta2TR). It includes an updated user interface, better accessibility support, improvements in the robustness of the platform, and greater functionality. The beta applications will continue to function after February 1, 2007, but in a reduced functionality mode. If users download the Technical Refresh to update Beta 2, then users can use its full functionality until March 15, 2007 for client products and May 31, 2007 for server products.