What is a service pack for?

I just downloaded the office 07 service pack but when i opened powerpoint or anyother program from office 07 nothing changes. What is the update suposed to do? Is it supposed to change anything? Also what is the XP service pack 3 for? Does it change the appearance of performance of my PC?

Serives packs include all of the hotfixes plus program improvements that Microsoft has released since the original version of the product or the last Service Pack they put out.

It is common for you not to notice changes, but they have closed security loopholes, made enhancements and maybe even added the ability to work with newer devices.

usually fix bugs in an application. i doubt it will improve performance of your pc.

Service packs are the means by which product updates are distributed. Service packs may contain updates for system reliability, program compatibility, security, and more. All of these updates are conveniently bundled for easy downloading. For more information about what a particular service pack contains and how to obtain that service pack, click the appropriate link:
http://support.microsoft.com/sp/

Service pack
From Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/Service_pac...
A service pack (in short SP) is a collection of updates, fixes and/or enhancements to a software program delivered in the form of a single installable package. Many companies, such as Microsoft or Autodesk, typically release a service pack when the number of individual patches to a given program reaches a certain (arbitrary) limit. Installing a service pack is easier and less error-prone than installing a high number of patches individually, even more so when updating multiple computers over a network.

Service packs are usually numbered, and thus shortly referred to as SP1, SP2, etc. It is notable however that they may bring, besides bug fixes, entirely new features, as is the case for instance with SP2 of Windows XP.

updates and repair patches;security patches ect./they are there even if you don't realize it.

When you get a car or a TV serviced it does not change its appearance - it just fixes known problems. This is the same with service packs.

wdw

Service Pack for any software...

is a packege designed to...
1-- Fix the bugs noticed in earlier version released.
2-- Crucial (system) updates
3-- Enhancements and introduction of new features

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