run a DLL as a App error

Customer keeps getting this error at startup.. anyone know what the "Run DLL as an App" is or where it is coming from?
error.JPG
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jtiernan2008Asked:
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LeeTutorConnect With a Mentor retiredCommented:
If you find the file RunDLL32.exe in your \Windows\System32 folder, right click it and select Properties, then you will see on the General tab, under Description:  Run a DLL as an App.
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MatthiasVanceCommented:
Could you please click on the "click here" part of the message and copy & paste the details here?

Kind regards,

Matthias Vance
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jtiernan2008Author Commented:
I will not have access to the computer... just need to know what the this file does rather than to troubleshoot it. This is just out of interest.
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LeeTutorretiredCommented:
This page describes the program that your message indicates:

http://www.processlibrary.com/directory/files/rundll32/

Often this message comes about because an antivirus program partially cleaned out a virus or other malware, but didn't get rid of the registry key that causes its malware program to execute at startup.  But there are plenty of valid uses of the Rundll32.exe program, also, such as documented on this page:

http://dx21.com/coding/libraries/rundll32/default.aspx
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jtiernan2008Author Commented:
This is "Run DLL as App" not Rundll32.exe. Usefull links by the way..
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LeeTutorretiredCommented:
Well, RunDLL.exe used to be a part of Win9x and ME, but is no longer in XP or Vista.  See this page:

http://www.processlibrary.com/directory/files/rundll/

In XP and Vista, what took the place of RunDLL.exe is RunDLL32.exe

If you have a RunDLL.exe on your system, it is malware.
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jtiernan2008Author Commented:
So they are exactly the same file?
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LeeTutorretiredCommented:
You mean are the RunDLL.exe and RunDLL32.exe the same file?  I doubt it.  But the former was used in Win9x and WinME, while the latter is used in XP and Vista.
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jtiernan2008Author Commented:
thanks a million
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