You wont get an English version of Windows because all copies of Windows are multi-lingual. Just go to you Control panel>Regional and Language Setting and change it from there. As for Acer customer support I have heard both good and bad things about them. I would stick to your guns about the replacement and not get the cheaper one. As they have had you laptop for 3 months and it had a fault when you purchased it they should replace it with a model of the same or greater spec , not lesser.