ad served by primawega

everytime i go on a shopping wesite like target or best buy i get in thrown somewhere else and says ad served by primawega.... is this a virus? how can i stop it?

Hi,
Yes, it is malware.

Please read THIS post, and post your HijackThis log file in new topic inside Virus, Spyware & Malware Removal forum.

Wait for instructions given only by DragonMaster Jay, Origin or Belahzur