Here's the MBAM log, the rest are attached to this post.
Malwarebytes Anti-Malware (Trial) 1.70.0.1100
www.malwarebytes.orgDatabase version: v2013.01.21.10
Windows XP Service Pack 3 x86 NTFS
Internet Explorer 7.0.5730.11
HP_Administrator :: HPA1240N [administrator]
Protection: Disabled
2013-01-21 20:49:50
mbam-log-2013-01-21 (20-49-50).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: 335345
Time elapsed: 37 minute(s), 7 second(s)
Memory Processes Detected: 0
(No malicious items detected)
Memory Modules Detected: 0
(No malicious items detected)
Registry Keys Detected: 3
HKLM\SYSTEM\CurrentControlSet\Services\syshost32 (Trojan.Syshost) -> Quarantined and deleted successfully.
HKCU\SOFTWARE\The Weather Channel (Adware.Hotbar) -> Quarantined and deleted successfully.
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Weather Services (Adware.Hotbar) -> Quarantined and deleted successfully.
Registry Values Detected: 2
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Control Panel\Cpls|wxfw.dll (Adware.Hotbar) -> Data: C:\Program Files\The Weather Channel FW\Framework\wxfw.cpl -> Quarantined and deleted successfully.
HKLM\SYSTEM\CurrentControlSet\Services\syshost32|ImagePath (Trojan.Agent) -> Data: "C:\WINDOWS\Installer\{24B722C6-B125-6D99-6411-901443A1FF9D}\syshost.exe" /service -> Quarantined and deleted successfully.
Registry Data Items Detected: 1
HKLM\SOFTWARE\Microsoft\Security Center|FirewallDisableNotify (PUM.Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Quarantined and repaired successfully.
Folders Detected: 0
(No malicious items detected)
Files Detected: 4
C:\WINDOWS\Installer\{24B722C6-B125-6D99-6411-901443A1FF9D}\syshost.exe (Trojan.Syshost) -> Quarantined and deleted successfully.
C:\WINDOWS\Temp\113c2b6ddc81.exe (Spyware.Zbot.USBV) -> Quarantined and deleted successfully.
C:\WINDOWS\Temp\DealioToolbar.exe (PUP.Dealio.TB) -> Quarantined and deleted successfully.
C:\WINDOWS\Temp\1jfuweif.exe (Exploit.Drop.GS) -> Quarantined and deleted successfully.
(end)
Thanks!