cannot get to startup wizard if tomcat is already installed/configured

followed instruction in readme.txt

C:\java\jira-pro-2.4.1\bin>startup
Using CATALINA_BASE: C:\java\tomcat\4.1.27
Using CATALINA_HOME: C:\java\tomcat\4.1.27
Using CATALINA_TMPDIR: C:\java\tomcat\4.1.27\temp
Using JAVA_HOME: C:\java\sdk\1.4.1_01
C:\java\jira-pro-2.4.1\bin>

OK, so nothig went into C:\java\tomcat\4.1.27\webapps so manually coppied C:\java\jira-pro-2.4.1\atlassian-jira directory to C:\java\tomcat\4.1.27\webapps\atlassian-jira
started the app using tomacat app manager...

I get the following JIRA error page
2003-11-06 21:26:46 Error Database Could not connect to database.

on re-start, tomcat gives...
root cause

java.lang.NullPointerException
at org.ofbiz.core.entity.jdbc.SQLProcessor.getConnection(SQLProcessor.java:238)
at org.ofbiz.core.entity.jdbc.SQLProcessor.prepareStatement(SQLProcessor.java:283)
at org.ofbiz.core.entity.GenericDAO.selectListIteratorByCondition(GenericDAO.java:1024)
at org.ofbiz.core.entity.GenericDAO.selectByAnd(GenericDAO.java:595)
at org.ofbiz.core.entity.GenericHelperDAO.findByAnd(GenericHelperDAO.java:134)
at org.ofbiz.core.entity.GenericDelegator.findByAnd(GenericDelegator.java:782)
at org.ofbiz.core.entity.GenericDelegator.findByAnd(GenericDelegator.java:767)
at org.ofbiz.core.entity.GenericDelegator.findByAnd(GenericDelegator.java:744)
at com.opensymphony.module.propertyset.ofbiz.OFBizPropertySet.getKeys(OFBizPropertySet.java:191)
at com.opensymphony.module.propertyset.AbstractPropertySet.getKeys(AbstractPropertySet.java:314)
at com.opensymphony.module.propertyset.PropertySetCloner.cloneProperties(PropertySetCloner.java:105)
at com.opensymphony.module.propertyset.PropertySetManager.clone(PropertySetManager.java:31)
at com.opensymphony.module.propertyset.cached.CachingPropertySet.init(CachingPropertySet.java:63)
at com.opensymphony.module.propertyset.PropertySetManager.getInstance(PropertySetManager.java:14)
at com.atlassian.jira.config.properties.PropertiesManager.loadPropertySet(PropertiesManager.java:84)
at com.atlassian.jira.config.properties.PropertiesManager.(PropertiesManager.java:30)
at com.atlassian.jira.config.properties.PropertiesManager.getInstance(PropertiesManager.java:40)
at com.atlassian.jira.config.properties.ApplicationProperties.getPropertiesManager(ApplicationProperties.java:38)
at com.atlassian.jira.config.properties.ApplicationProperties.getString(ApplicationProperties.java:63)
at com.atlassian.jira.config.webwork.ApplicationPropertiesConfiguration.getImpl(ApplicationPropertiesConfiguration.java:35)
at webwork.config.DelegatingConfiguration.getImpl(DelegatingConfiguration.java:43)
at com.atlassian.jira.config.webwork.JiraConfiguration.getImpl(JiraConfiguration.java:42)
at webwork.config.Configuration.get(Configuration.java:42)
at webwork.config.Configuration.getString(Configuration.java:52)
at webwork.dispatcher.ServletDispatcher.init(ServletDispatcher.java:89)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:935)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:668)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2416)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:601)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:392)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:619)
at java.lang.Thread.run(Thread.java:536)