Service Pack 1 will start downloading to PCs automatically beginning in mid-April.

If you want to get the benefit of a year's worth of improvements right now, click the Start Menu, All Programs, and select Windows Update.

Below are reasons why you might not see Service Pack 1 on Windows Update:
Cause 1
You are already running Windows Vista SP1.

Cause 2
Windows Vista SP1 has not been released for the language of the language pack that you have installed.

Cause 3
Windows Service Pack Blocker Tool is used to block the delivery of Windows Vista SP1 from Automatic Updates or from Windows Update.

Cause 4
You tried to install Windows Vista SP1, and the installation failed with a known inconsistency in the file or registry structure.

Cause 5
A hardware device driver or device software was problematic when you updated to Windows Vista SP1.

The Windows Update service can detect the small set of device drivers and software that falls into this category. The Windows Update service will not offer Windows Vista SP1 until an update for the hardware device driver or the device software has been installed.

Cause 6
You have installed a prerelease version of Windows Vista SP1, and you must uninstall the prerelease version, or start with a new installation of Windows Vista.

Cause 7
You used the third-party program vLite to configure the system, and you may have removed required system components that have to be available for Windows Vista SP1 to be installed.

Cause 8
You see one or more updates for Windows Vista when you run Windows Update. However, you do not see Windows Vista SP1 listed.

Download Windows Vista Service Pack 1 (435 MB)

New Features:
* Activities
* WebSlices
* Favorites Bar
* Automatic Crash Recovery
* Improved Phishing Filter

Download Internet Explorer 8 Beta 1

This update also includes a small number of new functionalities.

Download Windows XP Service Pack 3 RC

The Windows Vista Service Pack 1 Release Candidate (RC) is now available to the public. In addition to previously released updates, SP1 contains changes focused on addressing specific reliability and performance issues, supporting new types of hardware, and adding support for several new technologies. SP1 also addresses some management, deployment, and support challenges.

Get Windows Vista Service Pack 1 RC

Microsoft has released a service pack for the 2007 Microsoft Office suites.

Download the 2007 Office Service Pack 1

Updates Include:
Excel 2003
InfoPath 2003
Outlook 2003
PowerPoint 2003
Publisher 2003
Word 2003
Excel 2003

Download Office 2003 Service Pack 3 (118 MB)

1. Position your wireless router (or wireless access point) in a central location.
2. Move the router off the floor and away from walls and metal objects (such as metal file cabinets).
3. Replace your router's antenna. (May not be possible)
4. Replace your computer's wireless network adapter. (May not be possible)
5. Add a wireless repeater.
6. Change your wireless channel.
7. Reduce wireless interference.
9. Pick equipment from a single vendor. (Router and Adapter)
10. Upgrade 802.11b devices to 802.11g.

Source: Microsoft