Folks should continue to be careful with any Office documents (e.g., Word, Excel, Powerpoint, Access, etc) received in email (or exchanged in other ways).  As the March security updates strengthened some of previous vulnerabilities, it is important to stay up-to-date on security updates Windows, Office, and all other software products.

Microsoft Security Advisory 950627 - Jet Database Engine Vulnerability
http://www.microsoft.com/technet/security/advisory/950627.mspx

QUOTE: Microsoft is investigating new public reports of very limited, targeted attacks using a vulnerability in the Microsoft Jet Database Engine that can be exploited through Microsoft Word. Customers running Windows Server 2003 Service Pack 2, Windows Vista, and Windows Vista Service Pack 1 are not vulnerable to the buffer overrun being attacked, as they include a version of the Microsoft Jet Database Engine that is not vulnerable to this issue.

Customers using Microsoft Word 2000 Service Pack 3, Microsoft Word 2002 Service Pack 3, Microsoft Word 2003 Service Pack 2, Microsoft Word 2003 Service Pack 3, Microsoft Word 2007, and Microsoft Word 2007 Service Pack 1 on Microsoft Windows 2000, Windows XP, or Windows Server 2003 Service Pack 1 are vulnerable to these attacks.

Microsoft is investigating the public reports and customer impact. We are also investigating whether the vulnerability can be exploited through additional applications. Upon completion of this investigation, Microsoft will take the appropriate action to help protect our customers. This may include providing a security update through our monthly release process or providing an out-of-cycle security update, depending on customer needs. At this time, we are aware only of targeted attacks that attempt to use this vulnerability. Current attacks require customers to take multiple steps in order to be successful; we believe the risk to be limited.