Trojan ZeroAccess.B, Gen 2, and Gen

Hi, It seems that I have this common problem as well.

 

The location of this virus is     C:\Windows\Installer\{98f5aa44-faec-59ac-fb12-11cde10c8727}\U\

 My computer is Windows 7 Ultimate

Service Pack 1

32 Bit

 

Can I get some help on removing these viruses? I'm having a difficult time locating and deleting these viruses. Thank You