multithreading

I have a file of very very maximum no of mail so i am sending I have a servlet page. Using this servlete page, if I want to send the file to a jsp then between these time taking process i want to show something progress is going on but i dont like to use progressbar just i want to create threading in my servelt please anyone tell me how thanks in advance

[363 byte] By [abhinay_31a] at [2007-11-27 10:41:58]