Get data from WLAN

[Bob The Builder <bobathudson () gmail com>]

Hi,

I have the following network configuration:
- 1 pc connected directly to the router with a cable (this computer runs
ubuntu)
- 1 laptop connected to the router using WLAN with WPA encryption (this
computer runs windows 7)

Questions:
1. Is it possible for me to use Wireshark from the pc connected with cable
to get data traffic from the laptop connected using WLAN?
2. If yes to question 1; How can I limit the amount of data since I only
want the data from the laptop?
3. How do I analyse the data to get the http traffic? I want to see which
web pages have been visited, optionally also chatting over some protocols
like msn or facebook. Any filters for that, or can I see it in "clear text"
somehow?

Regards,
Bob The Builder

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