AT&T hasn’t enabled it, but the hack is already out for iPhone OS 3.0 (NOT 3.1 yet).

There are several ways of implementing that hack, all involves generate a tether-enabled carrier-specific .ipcc file.

I found this hack is the easiest to follow, even works on none-jailbroken iPhones.

Hack for tethering

Under tethering mode, screen as seen on my iPhone below.

Now you can safely carry your laptop around without having to hunt for Wi-Fi hotspots.

李开复最终放弃了谷歌的职位和高薪而选择创业。用他自己的话讲，每天有很多好的ideas，想去实施但是没有时间，如今已经四十多岁了，再不干就来不及了，谷歌高层也只好放行。

象李开复这样的技术出身的管理人员，对市场有敏锐的把握，有丰富的财务资本运作经验（毕竟是大中国区CEO），又有技术背景，没有理由不创业。

事实上，每个优秀的工程师都应该把创业作为最终目标。不光是为了挣钱，而是为了独立和有机会改变世界。

附链接：李开复对海外学子说: “再不回中国就来不及了”