What're you trying to achieve? If it's a point to point link this can help. However, I'm not a big fan of high gain antennas for use in the home. The problem is that you achieve range by trading off coverage. So, like cupping your hands around your mouth when you shout, you focus the RF energy in one direction at the expense of others. Depending on the area you need covered this may work for you but if you have areas that need coverage that're to the sides or behind this antenna they will be in nulls and won't have good coverage or may end up with none at all.

As for using this to reach farther with a laptop, it's unlikely to work. The higher gain the antenna, the tighter the beam focus and the more likely you won't be in the beam coverage area. Antennas like this are designed for point to point coverage, bridging two locations. So it won't work well with an internal laptop antenna. You'd be far better served to get something like the amplifier mentioned above and putting in a higher gain omnidirectional antenna. Omnis radiate in a bubble pattern. Higher gain omnis achieve range by "flattening" out the bubble into a doughnut shape.