I assume you have the home version. If it is a square taskbar icon then you have the 2009 version. Double-click the icon to open SecurityCenter, then click About in the lower right-hand corner to get version numbers for everything installed.
If the taskbar icon is shield-shaped then you have the 2010 product - double-click to open and then click Navigation (top right), then click About (left).
If you have Enterprise (Business) software you will have to repost here: http://community.mcafee.com/community/business/system/vse
By the way, if you compare DAT numbers between what you have and what is published on McAfee's Business product website there is often a discrepancy as DAT's take time to appear on all servers and are even withdrawn sometimes. The information on the website is for information only and is intended for business product customers only.