El siguiente codigo lo debes poner exactamente donde quieres que aparecca la caja de buscador

esto va el head

< script language = "javascript" > <!-- function search() { var sengine = document.searchform.engine.value; var string = document.searchform.string.value; location = sengine+string; } --> </ script >

cambia tu etiqueta body por esta otra

< body bgcolor = "#FFFFFF" text = "#000000" link = "#00FFFF" vlink = "#00FFFF" alink = "#00FFFF" >

esto va el body

</ p > < table border = "0" cellpadding = "0" cellspacing = "0" style = "border-collapse: collapse" bordercolor = "#111111" width = "100%" id = "AutoNumber1" > < tr > < td width = "37%" >& nbsp; </ td > < td width = "29%" > < div align = "center" style = "width: 179; height: 105" > < form name = "searchform" method = "POST" action = "javascript:search()" > < p >< font face = "Verdana" size = "1" >Introduce criterio de búsqueda:< br > < input type = "text" name = "string" value size = "19" ></ font >< br > < font face = "Verdana" size = "1" > < select name = "engine" size = "1" style = "font-family: Verdana; font-size: 8 pt" > < option value = "http://www.alltheweb.com/search?cat=web&amp;cs=utf-8&amp;l=any&amp;q=" selected > All The Web</ option > < option value = "http://www.altavista.com/cgi-bin/query?q=" >AltaVista </ option > < option value = "http://www.askjeeves.com/main/askjeeves.asp?ask=" >Ask Jeeves</ option > < option value = "http://www.clickey.com/search.cgi?keyword=" >Clickey </ option > < option value = "http://search.excite.com/search.gw?search=" >Excite </ option > < option value = "http://www.google.com/search?q=" >Google</ option > < option value = "http://www.goto.com/d/search/?type=home&amp;Keywords=" > GoTo</ option > < option value = "http://www.hotbot.com/?MT=" >HotBot</ option > < option value = "http://www.looksmart.com/r_search?key=" >LookSmart </ option > < option value = "http://search.lycos.com/default.asp?lpv=1&amp;loc=searchhp&amp;tab=web&amp;query=" > Lycos</ option > < option value = "http://www.mamma.com/Mamma?lang=1&amp;timeout=4&amp;qtype=0&amp;query=" > Mamma</ option > < option value = "http://www.northernlight.com/nlquery.fcg?qr=" >Northern Light</ option > < option value = "http://search.cnet.com/Infoseek/1,135,0,0200.html?QUERY=" > Search</ option > < option value = "http://www.scrubtheweb.com/cgi-bin/search.cgi?keyword=" > Scrub</ option > < option value = "http://www.webcrawler.com/cgi-bin/WebQuery?searchText=" > WebCrawler</ option > < option value = "http://search.yahoo.com/bin/search?p=" >Yahoo</ option > </ select > </ font >< br > < font face = "Verdana" size = "1" > < input type = "submit" value = "Buscar" name = "search" style = "font-family: Verdana; font-size: 8 pt" > </ font ></ p > </ form > </ div > < p >& nbsp; </ td > < td width = "34%" >& nbsp; </ td > </ tr > </ table >