keytool help (alias <tomcat> already exists problem)

Hi I am new to using certs & SSL. I am following the http://tomcat.apache.org/tomcat-5.0-doc/ssl-howto.html doc using java version 1.5.0.04 and when I run the command:

%JAVA_HOME%\bin\keytool -genkey -alias tomcat -keyalg RSA I get the following error:

Key pair not generated, alias <tomcat> already exists

I am running Tomcat 5.0 on my development machine, Windows platform...

Does anyone know what the solution or cause of the problem is?

Any help is appreciated.

Thanks

[527 byte] By [ron1972a] at [2007-10-2 6:43:17]
# 1
maybe you should try this with jdk1.4in many forum, you can see there may be the problem with the version of the jdk.please try,i'm not sure.just recommendation
wangqihuia at 2007-7-16 13:51:44 > top of Java-index,Security,Java Secure Socket Extension (JSSE)...
# 2
'alias <tomcat> already exists'Why on earth would this be a JDK problem, or indeed anything but what it says?The remedy is clearly either to delete the existing alias or to use another one.
ejpa at 2007-7-16 13:51:44 > top of Java-index,Security,Java Secure Socket Extension (JSSE)...