For the record, there are no wireless devices with Gigabit speeds. If your laptop says it is capable of gigabit speeds then it is referring to its wired NIC and not its wireless one.
The max currently capable to an end user via wireless in a Greenfield environment (lab/testing area) is about 300mbps using 40MHz wide channels (instead of 20MHz wide like most AP's use by default) on both the AP and the client with the new N standard and that is in the 5GHz frequency range if I am correct, not 2.4GHz.
Now, realistically will you or I or Dave down the street get even that kind of speed at home? No. Not when you start taking into consideration the myriad of other factors that slow down the transmission speed, both environmental and logical. I honestly think the fastest I have personally gotten on an N connection was about 30 to 40 megs of true to life throughput in a common office environment.
So what is all breaks down to is that you will not get gigabit from your laptop to your router wirelessly, only hardwired.
my 2 cents worth anyway...
Americanmcneil
Network+