There's no trick to it. There's nothing preventing you from buying
individual applications if you want to, though you may have to shop around a
bit to find them. There is, however, very little reason to do so. Amazon.com
are currently selling Office 2003 Pro for 399.98 USD. Individual copies of
PowerPoint and Access are selling for 199.99 USD each. So by buying the two
applications separately you would save the princely sum of 15.01 USD.