Suchin,You cannot validate your VISA
Suchin u cannot revalidate your VISA in USA becuase your VISA is vallid till OCT 2002. To get revalidate your OLD VISA should be expiring within in 60 days or it should not have expired over 1 year. However you can get revalidate in American embassy outside USA.
You will have no problem travelling with your old VISA. while cmoing back you can show the new company H1 approval and can get I-94 according to it. If you still like to have stamp , get stamped when you go to India, it takes only 3 to 4 business days.