How to Jailbreak your T-Mobile G1 cell phone
Jailbreaking isn't just for Apple devices anymore! You can jailbreak your G1 phone as well, which will give you access to third party apps outside the regular market store. After you've connected your phone to your computer, download the software, and you'll have a freshly jailbroken G1 phone! Make sure you have everything backed up before doing the jailbreak.