Patches include five Windows update, one for Microsoft Office, one for MS Messenger, and one for Microsoft Exchange.
An updated version of the malicious software removal tool will also be released, along with a couple of non-security related updates for Windows. On Wednesday, April 13th, there will be a Webcast discussing the technical details of the April security bulletins. You can get more info here.
Home users, you can let Windows AutoUpdate do the trick or go to Windows Update for operating system updates, and Office Update to update Office. Note that even if you do AutoUpdate, you might want to manually check Windows Update later to see if there’s anything AutoUpdate didn’t download automatically.