[Persistent spyware.banker infection - AcroIEhelpe.dll]

I have a persistent infection that comes back every time I reboot. Mbam finds and removes it, but on a reboot it shows up again. At first it was showing up as AcroIEhelpe.dll, not to be confused with Adobe's AcroIEhelper.dll. Now it's showing up as AcroIEhelpe002.dll. If I let the computer run it will download and install other malware. I'm at a loss for how to remove this thing.

Here's the scan log.

Malwarebytes' Anti-Malware 1.36

Database version: 2174

Windows 5.1.2600 Service Pack 3

5/25/2009 12:50:53 PM

mbam-log-2009-05-25 (12-50-53).txt

Scan type: Full Scan (C:\|)

Objects scanned: 127380

Time elapsed: 22 minute(s), 49 second(s)

Memory Processes Infected: 0

Memory Modules Infected: 0

Registry Keys Infected: 0

Registry Values Infected: 0

Registry Data Items Infected: 0

Folders Infected: 0

Files Infected: 2

Memory Processes Infected:

(No malicious items detected)

Memory Modules Infected:

(No malicious items detected)

Registry Keys Infected:

(No malicious items detected)

Registry Values Infected:

(No malicious items detected)

Registry Data Items Infected:

(No malicious items detected)

Folders Infected:

(No malicious items detected)

Files Infected:

C:\WINDOWS\system32\lodupgd.jpg (Trojan.Downloader) -> Delete on reboot.

C:\WINDOWS\system32\AcroIEHelpe002.dll (Spyware.Banker) -> Quarantined and deleted successfully.