Washington Contractors' Sales Increase Companies that provide federal agencies with network integration and payroll accounting technologies are benefiting from a government trying to bolster its defenses against terrorism, experts say. &lt;br&gt;&lt;FONT face="verdana,MS Sans Serif,arial,helvetica" size="-2"\ color="#666666"&gt;&lt;B&gt;-The Washington Post&lt;/B&gt;&lt;/FONT&gt;