There is a difference between patches and service packs. Service packs contain the complete part of the software being updated. Patches contain a small bit of information that will correct an error.
Service packs.
Windows Update
sp3 is the 3rd service pack (a collection of fixes and patches) for some version of Windows. service packs can't run by themselves, they must be installed on top of an already running compatible version of Windows.sp3 for XP will not install on Vista and vice versa.
1.Service packs 2.Security patches
Th service packs are basically updates for the computer
Usually, the developer releases post-game patches that can contain map packs. Or you can stroll on over to a modding portal to download user-made map packs.
Windows XP Service Packs are collections of updates, fixes and/or enhancements. You can learn more about Service Packs below. http://en.wikipedia.org/wiki/Service_pack
Hot packs are used to provide relief for muscle stiffness, promote blood flow, and relax muscles. Cold packs are used to reduce inflammation, numb pain, and help minimize swelling. They work by different mechanisms and are used at different stages of injury.
Go to www.thesims2.com and when you get to the homepage click on the help option at the top of the screen and click patches and it should take you to all of the patches for the Sims 2 expansion packs
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.
The PC patches include the map packs for free (PC Only)
No, but i recommend doing it, so that you old packs will be updated, so your not gonna go to the sims page and download all the patches!