The following changes have been implemented in Kaspersky Anti-Virus
Personal Pro 5.0 since 4.х versions:
• A new anti-virus kernel and use of iChecker™ and iStreams™ technologies
reduce memory use by twofold or more and increasing the anti-virus
protection performance by three times compared with version 4.0.
• The speed of anti-virus database updates has been increased through
automatic detection of the least busy Kaspersky Lab update server; an
algorithm has been added for downloading only the remaining part of the
update in case of a disconnection.
• The anti-virus settings can be adjusted through selection of one of three
preset protection levels with specific settings defined by experts at
Kaspersky Lab: maximum protection, recommended and high speed.
• The ability to disinfect files in ZIP, ARJ, CAB, and RAR archives has been
added.
• E-mail traffic using SMTP/POP3 protocols can now be scanned,
irrespective of the mail client in use, and a feature for disinfecting MS
Outlook and MS Outlook Express e-mail databases has been
implemented.
• A backup storage has been created in order to preserve backup copies of
suspicious or infec ted objects created before their disinfection or
removal.
• Quarantine operations have been enhanced - it is now possible to restrict
the storage duration for suspicious objects in quarantine. The ability to
send those objects via the quarantine interface to Kaspersky Lab for
analysis has been added.
Software requirements  Hardware requirements 
Microsoft Windows 95/98/ME 
Microsoft Internet Explorer 5.5 SP2 or higher
No other antivirus programs installed, including other Kaspersky Labs products
150MHz Intel Pentium processor (or compatible)
32MB of RAM (64MB recommended)
72MB available on HDD to install, 23MB to run

Microsoft Windows NT 4.0 
Microsoft Windows NT 4.0 Service Pack 6a or higher
Microsoft Internet Explorer 5.5 SP2 or higher
No other antivirus programs installed, including other Kaspersky Labs products
150MHz Intel Pentium processor (or compatible)
48MB of RAM (64MB recommended)
72MB available on HDD to install, 23MB to run

Microsoft Windows 2000 Professional 
Microsoft Internet Explorer 5.5 SP2 or higher
No other antivirus programs installed, including other Kaspersky Labs products
150MHz Intel Pentium processor (or compatible)
64MB of RAM (96MB recommended)
72MB available on HDD to install, 23MB to run

Microsoft Windows XP Home Edition/Professional 
Microsoft Internet Explorer 5.5 SP2 or higher
Service Pack 1 or later
No other antivirus programs installed, including other Kaspersky Labs products
300MHz Intel Pentium processor (or compatible)
128MB of RAM (more recommended)
72MB available on HDD to install