Unable to find USRP2 using Dell Vostro laptop (r8169)

I have a Dell Vostro laptop that uses r8169 ethernet driver.
OS is Ubuntu 11.04 64-bit. Installed gnuradio using the following script
http://www.sbrac.org/files/build-gnuradio

My laptop is not able to detect USRP2. USRP1 works fine.
I am able to detect USRP2 on other systems (eg - HP Probook e1000e
driver)

Is there anything I could do to make my Dell system work with USRP2??