Hello again Teabag, if the lappy is wireless enabled then there should either be a physical switch to turn on the wireless which should then search for your router and Bob's your Uncle, or it may be software controlled in which case it would probably be in Control Panel. As to which would be better the card or the inbuilt, go for the inbuilt every time, it uses less battery power, you free up your card slot and you can switch it off (probably) when you don't need it and save even more battery.