Trojan.Zeroaccess!inf NEED HELP PLZ!

I am not the most computer savy but if someone could be kind enough to  show me the right direction to get this virus taken care of I would be very appreciative!!

 

I have the free Norton through Comcast

Toshiba Satellite L455D-S5976

Windows 7 Home Premium 32-bit

AMD Sempron SI-42

2GB DDR2 RAM, 250GB HDD

 

If you need any more information let me know, Would like to get this ressolved ASAP.

 

Thanks for reading!! :)