Wifi tethring and game datas :(

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http://forum.xda-developers.com – I recently brought myself a Android and its awesome and i have rooted it ..... And i have also Using reverse tethring quite easily ... internet works quite goof ... :D But ppl when i open Gameloft games ...... they ask me to chose betwwn wifi or carrier network i choose wifi and it checks for a connection and then says no connection found help :( I dont have a wifi at my house i have a Lan dail up ..... and i cant afford a 3g connection :( 2g will take years to download 1.8 gb of data :P City of saints :( Help (HowTos)