Is there any way to reinstall the plug in Norton Identity protection on chrome?

When I upgraded to NIS 2012 I had loads of problems with the NIP add on so after reading the forums I disabled it and tried the solutions I had found on here then tried enabling it again and came up with the same problems, it kept crashing Chrome and so I decided to remove it.

 

Now I've just signed up for Internet banking and am wondering if maybe having this add on would be safer but I can't find anyway of reinstalling it, is there a link that I can use to try putting it back on?

 

It is still installed on IE9 but I hate using that as it stops responding so often that it really annoys me.