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Extension Technology and
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University of Missouri-Columbia   Extension Technology and Computer Services—ETCS


January 1999 
Vol. 16, No. 1

A Technology Newsletter for Extension Specialists



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Dr. Solomon's Update
by Charlie Baerwald

Since the last article in December, we've seen both a new version of Dr. Solomon's and several new extra.drv files.  The latest version of Dr. Solomon's is 7.91 as opposed to 7.8x, and was posted on 1/7/99.  If you can't see the date the file was "last modified" in the Windows Explorer window, choose View on the upper toolbar, then Details.  The date will then display to the right of the file.  The latest extra.drv file is dated 12/31/98.

If you have the earlier version (7.8x) installed, get the new version (7.91) and install it right over the old version. No need to un-install 7.8x - the new version simply replaces old files with new ones, and deletes files no longer needed.  If you don't have Dr. Solomon's at all, this version will also perform a complete install.  (See Inner Circuits December 1998 Computer Viruses article for how to get Dr. Solomon's anti-viral software from the UOEshare server.

After you've installed Dr. Solomon's, for maximum protection, you need to configure WinGuard, a part of Dr. Solomon's anti-virus suite. Follow these steps:

  1. Reboot your computer, copy the extra.drv file to the Dr. Solomon's program files (into C:\Program files\Dr. Solomon's\Anti-Virus Tool Kit). 
  2. On the bottom right of the Desktop taskbar, look for the little red soldier with the black hat and cannon.   Single left-click on him, and the WinGuard configuration window will appear.  Choose "Configure", "Protection".  In the window that appears, click all boxes on the left side except "Scan on writes" and "Close DOS box on virus".  On the right side, make sure that "Scan all files" is checked.
  3. At the bottom of this same "Configure Protection" window, Browse for the location of the extra.drv file. (C:\Program files\Dr. Solomon's\Anti-Virus Tool Kit).  Double click on file name.  Now click OK, and reboot the computer.

In this configuration, all files will be checked when you double-click to open (or with any other method of opening) before the file opens. If it is infected, you will be prompted to disinfect the file, or be notified that it has been disinfected.

If the infected file was a Word file with a macro virus, when the disinfected file is reopened, you will receive a notice from Word that the file contains a macro, and give you the choice to enable macros or disable them. Always disable macros unless you know that the macro is designed to be a functional part of the document.  However, opening the file with Macros enabled after disinfection should not re-infect the file, or cause any other problems.  At the time of this writing, Dr. Solomon's does not eliminate the entire (disinfected) macro, presumably to leave intentional ones functional. Best advice is to always choose disable macros if you don't know for sure that you need the macro that is included in the file.


Can't delete file: Click on the WinGuard icon on the right side of the toolbar, and choose Configure\Protection.  Uncheck "Enable WinGuard", then reboot your computer.  You will then be able to delete the file.  This problem occurs particularly with Trojan Horses or other "non-viruses" that have had the names changed by Dr. Solomon's.  Return to WinGuard and enable it once you have deleted the unwanted file.

You've copied the "extra.drv" file to the Dr. Solomon's program files, but when Browsing for it while "configuring protection", you can't see it:

Make sure that "Windows Explorer" is set to "Show all files".  Open Windows Explorer from the "Start" button (Start\Programs\Windows Explorer) or press the "Windows" and "E" keys simultaneously. Then go to "view" on the toolbar, and select "Options".  Win95 should open in the "view" tab.  Choose "Show all files", "Display the full MS-DOS path", and "Include description bar for right and left panes". Click on "OK".  Then click on "View" and select "Details" (upper task bar in Windows Explorer). Now try browsing for the "extra.drv" file again.



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