Problemas Tomcat

estou com o seguinte problema na minha aplicação quando eu inicio o servidor ele está dando erro 404
e a seguinte mensagem no console :

31/10/2007 10:58:37 org.apache.catalina.core.AprLifecycleListener lifecycleEvent
INFO: The Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\work\SESCOOP\JDK1.5.0_04\bin;.;C:\WINDOWS\system32;C:\WINDOWS;C:\work\SESCOOP\JDK1.5.0_04\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\oracle\bin;C:\Arquivos de programas\Oracle\jre\1.3.1\bin;C:\Arquivos de programas\Oracle\jre\1.1.8\bin;
31/10/2007 10:58:38 org.apache.coyote.http11.Http11BaseProtocol init
INFO: Initializing Coyote HTTP/1.1 on http-8080
31/10/2007 10:58:38 org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 780 ms
31/10/2007 10:58:38 org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
31/10/2007 10:58:38 org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/5.5.20
31/10/2007 10:58:38 org.apache.catalina.core.StandardHost start
INFO: XML validation disabled
31/10/2007 10:58:38 org.apache.catalina.loader.WebappClassLoader validateJarFile
INFO: validateJarFile(C:\Work\SESCOOP\AG_CITS\WebContent\WEB-INF\lib\servlet.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class
log4j:WARN No appenders could be found for logger (org.apache.catalina.startup.TldConfig).
log4j:WARN Please initialize the log4j system properly.
31/10/2007 10:58:38 org.apache.catalina.core.StandardContext start
SEVERE: Error filterStart
31/10/2007 10:58:38 org.apache.catalina.core.StandardContext start
SEVERE: Context [/AG] startup failed due to previous errors
31/10/2007 10:58:38 org.apache.coyote.http11.Http11BaseProtocol start
INFO: Starting Coyote HTTP/1.1 on http-8080
31/10/2007 10:58:39 org.apache.jk.common.ChannelSocket init
INFO: JK: ajp13 listening on /0.0.0.0:8009
31/10/2007 10:58:39 org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=0/46 config=null
31/10/2007 10:58:39 org.apache.catalina.storeconfig.StoreLoader load
INFO: Find registry server-registry.xml at classpath resource
31/10/2007 10:58:39 org.apache.catalina.startup.Catalina start
INFO: Server startup in 1248 ms

Verifica se realmente esse path está correto:
C:\Work\SESCOOP\AG_CITS\WebContent\WEB-INF\lib\servlet.jar

Pelo menos isso está errado, pois o Container está dizendo que não conseguiu carregar essa lib…

[]'s.