Network down after installation

Hi i have a winxp laptop and after installing the norton antivirus 2011 (not beta) retail box.

The network seem to have fail, my ethernet, wireless all ain't working on my laptop.

Not router issue as my ipod touch still works.

so the problem is restricted to the laptop.

didn't have the error until i installed it .

some error about "cannot load lcs"

 

any help please! thanks!