I was just reading the Security newsletter and saw this useful entry:
Microsoft Product Lifecycle Information
Find information about your particular products on the Microsoft Product Lifecycle web site.
See a List of Supported Service Packs: Microsoft provides free software updates for security and nonsecurity issues for all supported service packs.
If you want to sign up to the newsletter, just follow these steps:
– Got to the Profile Centre
– Log in
– Click on Manage my Subscriptions
– Select your country/loacation preference as UK
– Select the Microsoft security newsletter
– Hit subscribe/update