Personally, I would go with a better quality Mobo (Asus or Gigabyte) for your Brother.
You will need a retail version of an OS when you change the Mobo in the Acer.
The Mobo you linked to will accept the i7-2600
You will need a retail version of an OS when you change the Mobo in the Acer.
The Mobo you linked to will accept the i7-2600