Yes it is possible
Hi, sorry to revive such an old post. I was looking for this in google and this post appear so I thought it would be cool if whoever get in here get the answer..
In Control Panel, double-click Network Connections.
Right-click a network interface, and then click Properties.
Click Internet Protocol (TCP/IP), and then click Properties.
On the General tab, click Advanced.
Clear the Automatic metric check box, and then enter the number 1.
Do that for the lan interface and the wireless interface. That way is going to use both networks indepently at the same time so a program like utorrent which can use many connections at the same time, will take full advantage of your 2 networks