Connect Samsung Galaxy S2 with laptop. thru WIFI Direct

Solution 1:

Samsung KIES or AirDroid (from Android Market) does the job well. Files can be transferred over wifi by using your web browser.

AirDroid gives a quick and painless way to transfer files

Solution 2:

I looked for this myself but I'm pretty sure Wifi direct only works with other Wifi direct devices, not your average PC Wireless router. You'll have to just plug in the USB cable like a caveman.

Solution 3:

I use WiFi File Transfer. Works very well for wireless file transfers.
(I use the free version, but there is space limits on the free one so you can't transfer large files. The paid version AFAIK has no space limit)