While there may be some important Microsoft updates, none of them will arrive via email. Write it down. Microsoft does not send out updates via email. Do not click on links related to Microsoft’s updates that arrive via email.
There seems to be a new variant of some old mischief being sent out. Remember, Microsoft NEVER sends out updates via email. Do not run any executable sent to you with the subject line “Microsoft Security Bulletin MS07-0062″.
If you want to update your Windows system or check for new patches, go to your Start Menu and find the “Microsoft Updates” or “Windows Updates” shortcut. Or, just go to the Microsoft Update page using Internet Explorer.