serenoo - 3:03 pm on Nov 26, 2010 (gmt 0)

I own an affiliation website where I cannot change a lot because the script is from the vendor.
But I can edit the robots.txt file.
My problem is that I have two pages with the same content:
www.mywebsiteexample.com/
www.mywebsiteexample.com/?lc=en

is there a way to block the second page by robots.txt?
Disallow: /?lc will work?