Here at SiNfuL iPhone we try to help people as often as we can wherever we can.
To help us help you, if you ever need help with a specific question that has to do with an iPhone 3G (not 3GS) try to keep your post in this format:
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Device in question: iPhone 4, 3GS, 3G, 2G or 1G, iTouch 4G, 3G, 2G, 1G, iPad 2G or iPad1 or Apple TV 2G or 1G (in this case, an iPhone 3G)
Firmware and/or Baseband of Device in question: Can be found in Settings -> General -> About
What kind of problem do you have?: Springboard crashing, apps not installing, infinite boot loop, etc
Any other info nessecary pertaining to the problem: Anything we might find useful to help would be nice

So it should be something like this:
Device: iTouch 3G
Firmware: 4.2.1
What kinda problem: Boot logos
How do I enable custom boot logos on a greenpois0n jailbreak?
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-SiNfuL Staff