How to use Verisign certicate in Tomcat (for SSL) and WITHOUT a .keystore file

[RRG]

Hi,

I want to use secure certificates provided by thirdparty vendors like Verisign.
I do NOT want to use keystore to generate certificates for me.

Now, when I enable SSL in my Tomcat, it expects a .keystore file.

Can anyone let me know how to avoid this .keystore file and use a verisign certificate (for example)
when I enable SSL in my Tomcat?

Thanks,
Raja