From the FAQ on the AutoPatcher website...
...General
Q: What is AutoPatcher? A: AutoPatcher could be described as an offline Windows Update. AutoPatcher provides an interface to a large collection of updates, common applications and registry tweaks, that can be easily and quickly applied to your computer system. Q: What are the advantages of AutoPatcher over Windows Update? A: The main advantage is that you just have to do one download in order to have all the patches and add-ons, such as Sun Java, MSN Messenger 7.x and Windows Media Player 10. If you have many computers or if you format your computer frequently, it saves both time and bandwidth. With AutoPatcher, you can install critical patches offline, eliminating the risk of getting infected while using Windows Update. You can also come in handy when updating a friends PC, if he/she can't access the Internet (or uses a narrowband connection). Q: Where can I find more information on AutoPatcher? A: You can visit the official forum here: http://www.neowin.net/forum/index.php?[/b]showforum=89, and the official website here: www.autopatcher.com Q: Is AutoPatcher legal? A: Yes, Antonis Kaladis (our project manager) once spoke to a Microsoft employee and apparently they know about us but don't care what we do! The AutoPatcher project has been going strong since 2003 and never had a sniff of trouble from Microsoft.
Here is a link to the FAQ which is worth looking through if you are interested in trying this app.Q: Can i use AutoPatcher from a CD/DVD/Flash drive/external hard drive? A: Yes, simply copy the contents of C:\Program Files\AutoPatcher (default location) over.
http://www.autopatcher.com/faq/
There is a link to the home page of the site in the quote above.
I will be trying this out over the next couple of days. If anyone has used it, or has more time to test it than I do at the moment, don't be shy to comment.