I am using a Mac Mini and that connects to the internet via a 3g USB modem. There is no wifi in my place. Is it possible to somehow share that internet to my iPod Touch?
OK, first up: I must state I haven't tried this myself, but here are the instructions do to just that.
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Edit: Just tried it in Leopard - the Sys Prefs are different from shown in that link (and allow WEP or WPA security) but I didn't get it going between my Mini and iPod Touch - although the Touch can see the Mini's network, it wouldn't connect - but it looks like it's only a question of fiddling, or finding a more recent tutorial.