                                                            October 1995
 Upgrading versus Updating
 -------------------------
 The users of anti-virus software are accustomed to update their
 antiviral software at regular intervals. Updates are necessary if your
 AV software is primarily a scanner. The spreading of new viruses in the
 past has been relatively slow. It took a year, sometimes even two for
 new viruses to become common. Now, with the explosion of the public
 networks, virus spreading became much faster.

 The many forums dealing with viruses, paradoxically contributed to the
 rapid dissemination of viruses. Once a virus or malware code becomes
 news, then hundreds of collectors will look to add the hot item to
 their collection. Many viruses escaped in the wild this way, Nightfall
 and the Word.Concept macro to mention just a couple.

 Some viruses set records in becoming common within three to six months
 from being reported. Therefore, scanner based anti-virus software need
 frequent updating. Some products are updated monthly, there is one that
 updates even weekly!

 InVircible has a virus scanner too. Its database contains only the most
 common and widespread viruses, just about a couple of hundreds, which
 are about 5% or less of the total number of viruses. Naturally, it
 takes quite a long time, a year or longer, for a virus to become really
 widespread. Only few viruses make it, and this is why IV's scanner has
 very few viruses added to its database, annually. In 1995, to the date
 of this document, only Quicksilver.1376 was added since it became
 really common.

 NetZ Computing keeps developing and improving InVircible on a regular
 basis. These improvements are released as product upgrades, to
 distinguish them from the scanners' updates.

 We encourage you to send us your problems with viruses and antivirus
 software, as well as your suggestions. Many improvements in InVircible
 were inspired by users' suggestions and wishes.

 Do you need to upgrade an IV version?
 -------------------------------------
 Not necessarily! If the current version of InVircible works properly on
 your machine, then it's unlikely that you need to upgrade. Unless you
 want to, because of a new features included in the newer version.

 A text file named WHATSNEW.xxx is released with each upgrade. In this
 file you'll find a list and description of the new and improved
 features. Before upgrading your current version, read the document to
 decide if you need the upgrade.

 There is no need to upgrade InVircible more frequently than once to
 twice a year, at the most. In the five years since its first version,
 InVircible's older versions, up to two years of age, still prove
 efficient against new viruses that appeared just recently!

 Network administrators are advised to upload the upgraded version to
 the server, to the directory from which IVlogin is run (see appendix B
 in the online manual). This will automatically upgrade InVircible's
 version on all workstation.

 How to upgrade your licensed IV copy.
 -------------------------------------
 The purchase of a license for the utilization of a specific version of
 InVircible is not limited in time. You licensed floppy also provides
 you the possibility to upgrade without additional charges, for a period
 of one year from the date of the production of the software. The
 installation of the IV license to your hard disk earmarks the HARD
 DISK, not the software, as an IV licensee.

 To upgrade from a lower version, download the newer InVircible version
 from the BBS or network. Open the ZIP file into a temporary directory,
 change directory to the one containing the new version and run the
 IVB.EXE program. Watch if the "Licensed" label appears at the upper
 left corner of the screen. If yes, then your license is still valid for
 this upgrade and you can then proceed with INSTALL/FAST. It will
 overwrite the older version with the new one and it will inherit the
 license of the former version.

 To upgrade the license on the floppy, format the diskette (deleting all
 files won't suffice, there is a hidden armor file on these floppies,
 this is why it needs formatting) and copy the new version files to it.
 When done, issue the command IVB /A A: (or B:) to re-install the IV
 Armor on the floppy.

 In case the newer version indicates "Sentry" instead of "Licensed" with
 the new IV software, then the term of the license on your FLOPPY
 expired for upgrades. The current last version will continue to be
 functional for as long as you keep it. You can then choose to purchase
 a new license (registered floppy) for another term, or stay with your
 current version, for as long as you wish.

 The upgrading of the license works only upward. For example, once you
 changed the license from ver 6.01x to 6.02, then the lower versions
 will not recognize the license anymore.

 For licensed users working under OS/2 and Windows 95.
 -----------------------------------------------------
 To upgrade your license to reflect both in DOS and in the 32 bit OS DOS
 shell, you will need to run InVircible ONCE in a real DOS environment.
