complete removal of winantivirus pro 2007

hi all , ive just registered so new to this forum not sure if this is the correct place to post this

i have recently some how seemed to download winantivirus 2007 which im told is a trojanvundo , i have tried almost everything to get this removed but it just wont go away ive used nortonn2007 aswell as spybot and avg in both safe mode and normal ,

has anyone succesfly removed this or does anyone know how to completly remove it , thanks