I've followed the instructions for the 8-step virus/malware removal and am posting the logs as instructed:
Malwarebytes' Anti-Malware 1.46
www.malwarebytes.org
Database version: 4415
Windows 5.1.2600 Service Pack 3
Internet Explorer 7.0.5730.13
8/10/2010 6:03:42 PM
mbam-log-2010-08-10 (18-03-42).txt
Scan type: Quick scan
Objects scanned: 186620
Time elapsed: 27 minute(s), 53 second(s)
Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 3
Registry Values Infected: 0
Registry Data Items Infected: 2
Folders Infected: 0
Files Infected: 1
Memory Processes Infected:
(No malicious items detected)
Memory Modules Infected:
(No malicious items detected)
Registry Keys Infected:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\Stats\{549b5ca7-4a86-11d7-a4df-000874180bb3} (Trojan.Agent) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\The Weather Channel (Adware.Hotbar) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Weather Services (Adware.Hotbar) -> Quarantined and deleted successfully.
Registry Values Infected:
(No malicious items detected)
Registry Data Items Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\AntiVirusDisableNotify (Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\FirewallDisableNotify (Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
Folders Infected:
(No malicious items detected)
Files Infected:
C:\WINDOWS\Fonts\a_pizzaz.exe (Worm.Archive) -> Quarantined and deleted successfully.
_________________________________________
Thanks for all your help!
Malwarebytes' Anti-Malware 1.46
www.malwarebytes.org
Database version: 4415
Windows 5.1.2600 Service Pack 3
Internet Explorer 7.0.5730.13
8/10/2010 6:03:42 PM
mbam-log-2010-08-10 (18-03-42).txt
Scan type: Quick scan
Objects scanned: 186620
Time elapsed: 27 minute(s), 53 second(s)
Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 3
Registry Values Infected: 0
Registry Data Items Infected: 2
Folders Infected: 0
Files Infected: 1
Memory Processes Infected:
(No malicious items detected)
Memory Modules Infected:
(No malicious items detected)
Registry Keys Infected:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\Stats\{549b5ca7-4a86-11d7-a4df-000874180bb3} (Trojan.Agent) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\The Weather Channel (Adware.Hotbar) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Weather Services (Adware.Hotbar) -> Quarantined and deleted successfully.
Registry Values Infected:
(No malicious items detected)
Registry Data Items Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\AntiVirusDisableNotify (Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\FirewallDisableNotify (Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
Folders Infected:
(No malicious items detected)
Files Infected:
C:\WINDOWS\Fonts\a_pizzaz.exe (Worm.Archive) -> Quarantined and deleted successfully.
_________________________________________
Thanks for all your help!