Hello, Yellowman! Most of the information you asked for - including installing Froyo and setting up a lockscreen - can be found in the Ermine tweaks thread, which is located at the top of the forum. As for your other request, I'm not sure if Android can locate an ad hoc network. What kind of phone do you have? I have an Optimus V with Android 2.2, and I use QuickSettings to enable a wi-fi hotspot.
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