Hi All this is the short version on how to Jailbreak an iPhone 3G on a Mac using Redsn0w. If you are after the long version of this video to see a step by step guide on how to do it you can find it here.
If you want to down you can download Redsn0w and many more fun apps from the downloads section of the 123 my IT website.
To find the downloads click here.