Wireless-N vs Wireless-G?

A Wireless N adapter WILL work with a wireless G router though, but will work at G speeds.

Wireless G Standard Speed = 54Mb/s (IEEE 802.11 Specifications)

Wireless N Standard Speed = 144Mb/s (IEEE 802.11 Specifications)

So the Wireless N Adapter is capable of the above speed, but when it connects to the Wireless G Router, it will be throttled to the maximum G standard speed (54MB/s).

The same holds true to your internet connection. So say for example you have the following...

Wireless N Adapter (capable speed = 144Mb/s)

Wireless G Router (capable speed = 54Mb/s)

Internet Provider (capable speed = 10Mb/s)

Your online environment will be at best 10Mb/s as your Internet Provider throttles your speed to that limit even though you have hardware capable of providing higher speeds.

Your connection to the router will be 54Mb/s but beyond your router (Internet) you are at the mercy of your Internet Providers designated speed of 10MB/s.

Yep. Wireless G is Not only slower but will not give you the range an N router will. I included a link that describes each in detail.

It'll boost the speed between the desktop and the laptop if the laptop has a wireless N card. It won't change your internet speed, because G is already faster than your internet speed.

Wireless N is faster but sometim less reliable.

well, depending on your internet connection speed, most likely your laptop will have a slower connection on a G router.

For internet use probably not, for LAN file transfers... maybe if your moving really large files around.

Yes.