2011 Anti virus

I have just 3 days left on my 2010 Norton.I have installed 2011 and it says it is installed but I still only have the 3 days left and I never get the page for the product code. I also get a picture for a 2011 for 3 computers when it tells me what I have installed.2010 was for 3 computers but 2011 is for one . I have already done the stuff on the help /support page .I haven't installed anything before this .Help please ! Thank you.