Anyrelation between the .keystore exisitng in the system and tomcat keystor

Question

there is a .keystore under documents & settings\ username\
by default for getting digital certificates we need to create a keystore.
when i created a keystore of my own name it showed some error.
i then created a keystore with name .keystore and password changeit.
it worked when i replaced my keystore over the exisitng .keystore under documents and settings...
no body know abt the signature and all when i posted.
atleast someone can help me..
my doubts are:
1) whats the existing keystore?. can i use it for generating CSR?
2) what shld i do when i want to create a keystore of my name.. any extension is needed?... where shld i place it...how shld i edit the server.xml? i tried using the admin tool and my server.xml got correpted.. showed lifecycle exception while starting tomcat.
3) i got a mail from verisign at the bottom they had something like the content in my CSR file. but they have given some installation instructions above that..and many links each of that pointed to 3 different such certificates..and i got confused.. which one to choose.
when i followed the tomcat ssl intruction and copied the thing which i saw at the bottom of my mail i was able to view the page using https. and asked for certificate installation
can some one pls direct me correctly

Answer 1

Update on the situation. I quickly realised that my code was not threading ... doh!
public class Test implements Runnable{
        public static void main(String[]args) throws Exception {
                while(true) {
                        Test test = new Test();
                        // Create and start the thread
                        Thread thread = new Thread(test);
                        thread.start();
        public void run() {
                Math.random();
}Running this on the alpha box I got 177% of CPU being used ... more like it IMHO. However the debian box still suffered from the same problem. I know that this problem now looks like it lies outside of this forum's scope but does anyone have any experience of debian & multi-processor boxes WRT java?
Any help at all will be appreciated.
Andy Yates