<s>
Dr	B-Application
Solomon	I-Application
's	I-Application
Antivirus	I-Application
Toolkit	O
is	O
an	O
antivirus	B-Application
suite	O
which	O
incorporates	O
prevention	O
,	O
detection	O
and	O
repair	O
for	O
Microsoft	B-Application
MS-DOS	I-Application
,	O
Microsoft	B-Application
Windows	I-Application
(	O
up	O
to	O
98	O
)	O
,	O
Novell	O
,	O
SCO	O
Unix	B-Application
,	O
Sun	B-Application
Solaris	I-Application
and	O
OS/2	B-Application
.	O
</s>
<s>
Dr.	O
Solomon	O
's	O
Anti-Virus	B-Application
Toolkit	O
was	O
first	O
created	O
in	O
1988	O
and	O
launched	O
commercially	O
in	O
1991	O
.	O
</s>
<s>
This	O
move	O
was	O
to	O
rival	O
market	O
leaders	O
Symantec	O
's	O
Norton	B-Application
Anti-Virus	I-Application
and	O
McAfee	O
VirusScan	B-Application
.	O
</s>
<s>
In	O
1993	O
,	O
Dr.	O
Solomon	O
's	O
Anti-Virus	B-Application
Toolkit	O
was	O
awarded	O
the	O
Queens	O
Award	O
for	O
Technological	O
Achievement	O
.	O
</s>
<s>
After	O
some	O
previous	O
tension	O
between	O
the	O
two	O
software	O
products	O
,	O
on	O
June	O
9	O
,	O
1998	O
,	O
McAfee	O
(	O
then	O
known	O
as	O
Network	O
Associates	O
)	O
agreed	O
to	O
acquire	O
Dr.	O
Solomon	O
's	O
Group	O
plc	O
,	O
the	O
leading	O
European	O
manufacturer	O
of	O
antivirus	B-Application
software	I-Application
,	O
for	O
$642	O
million	O
in	O
stock	O
.	O
</s>
