we would like to know how many computers in the US (prefer US figures)
or the world that are running antivirus programs, and anti-spyware
programs.  Want the figure for each.

<Users of antivirus and antispyware programs.

81% of consumers are using anti-virus software and 67% haveinstalled
anti-spyware. The study surveyed 1099 U.S. consumers.
Source: Forrester/BSA. 
Based on the figures for the number of internet users below:
Number using anti-virus software ? 165,097,786.
Number using anti-spyware ? 136,562,366.
http://www.bsacybersafety.com/news/2005-Holiday-Online-Shopping.cfm

A full copy of the study is available here. Source: BSA.
http://www.bsa.org/usa/research/loader.cfm?url=/commonspot/security/getfile.cfm&pageid=34376

70% of consumers use some form of anti-spyware software.
27% of online consumers use anti-spyware software to erase cookies
weekly. The study surveyed 800 online consumers.
Based on the figures for the number of internet users below:
Number using anti-virus software ? 142,677,099
Source: Horizon Interactive.
http://publications.mediapost.com/index.cfm?fuseaction=Articles.san&s=29492&Nid=13137&p=204029

Taking an average of the two studies, the number using anti-spyware is 153,887,442.

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As of 31 December 2005, the USA had 203,824,428 internet users.
http://www.internetworldstats.com/stats2.htm#north>


<Search strategy:>

<"percent use anti spyware" consumers>
<://www.google.com/search?q=%22percent+use+anti+spyware%22+consumers&hl=nl&rls=GGLG%2CGGLG%3A2006-06%2CGGLG%3Anl>

<usa "internet users" million 2006>
<://www.google.com/search?hl=nl&rls=GGLG%2CGGLG%3A2006-06%2CGGLG%3Anl&q=usa+%22internet+users%22+million+2006&lr=>

<forrester "anti spyware"  "1099" bsa>
<://www.google.com/search?hl=nl&rls=GGLG%2CGGLG%3A2006-06%2CGGLG%3Anl&q=forrester+%22anti+spyware%22++%221099%22+bsa&lr=>


<Hope this helps.>