virus?

yesterday my lap top detected a virus (worm) I have been out and bought a Norten internet security 2010 disc but says i dont have permission to run disc, I am on windows live and think maybe not right one as cover says wind vista wind 7 and windows xp is there anything i can do as getting worried ....pc keeps asking me to buy 80.00 cleaner on the error message it just says everything is at risk of infection please help
ally, October 2010


done
You have a spoof virus. It is pretending to be a virus in order to get you to pay a 'ransom'.

This type of malware is often difficult to remove because it knows about real anti-malware (like Norton) and attacks it.

I suggest a trip to you local computer shop to get it fixed. You can avoid this in future by having anti-malware (Like Norton) software always running on your PC.

T, October 2010