Federal Trade Commission officials <A HREF="http://news.zdnet.com/2100-1009_22-5403438.html?tag=zdnn.alert">have filed a lawsuit</A> to halt an alleged spyware distributor from surreptitiously installing software on users' computers and then trying to induce them to purchase anti-spyware products, according to court documents filed Thursday. The FTC is seeking an injunction against Sanford Wallace and his two companies, Rochester, N.H.-based Seismic Entertainment Productions and Richboro, Pa.-based Smartbot.net, according to filings in the U.S. District Court for the District of New Hampshire.