I have Avast premeum and my computer continully gets virus messages concerning Win32:Downloader-PKU but never does anything about it. I see you’ve helped others, please help me. Tell me what you need and I’ll get it for you.
chris
Please attach your logs.
http://forum.avast.com/index.php?topic=53253.0
Where do I find them??
Follow my link. 
We need the logs from MBAM, OTL and aswMBR.
Here they are
Malwarebytes Anti-Malware 1.62.0.1300
www.malwarebytes.org
Database version: v2012.08.06.11
Windows 7 x64 NTFS
Internet Explorer 8.0.7600.16385
Owner :: BALLIETSERVER [administrator]
Protection: Enabled
8/6/2012 3:30:00 PM
mbam-log-2012-08-06 (15-30-00).txt
Scan type: Quick scan
Scan options enabled: Memory | Startup | Registry | File System | Heuristics/Extra | Heuristics/Shuriken | PUP | PUM
Scan options disabled: P2P
Objects scanned: 208181
Time elapsed: 1 minute(s), 48 second(s)
Memory Processes Detected: 0
(No malicious items detected)
Memory Modules Detected: 0
(No malicious items detected)
Registry Keys Detected: 0
(No malicious items detected)
Registry Values Detected: 0
(No malicious items detected)
Registry Data Items Detected: 0
(No malicious items detected)
Folders Detected: 0
(No malicious items detected)
Files Detected: 1
C:\Windows\Installer{7ee8c6c2-0581-7f4d-a6a4-a930dee72452}\U\00000008.@ (Trojan.Dropper.BCMiner) → Quarantined and deleted successfully.
(end)
here are the remaining log files