My guess is you arent using the right type of board the aforementioned CP2112 board is the one used by everyone to do a battery reset using the batterykiller software (google gets you the software), you only need 3 wires SDA SCL and ground...
Thank you once again for your advice. You say:
"It seems that the only way you can get round this is to either use a friends wifi or find somewhere that has wifi that just requires a password and has no webpage login script, cafe's usually have...