If you have to submit your page ... from JSP to ASP...you simply pass the parameters in Query
String thats fine....now the from ASP file you need to pass the parameters to applet...
inside <applet> </applet>
tag you can use <param> tag to pass any parameters
that you can get using getParameter i applet
in simple case this approach will work...otherwise XMLRPC is a powerful thing for cross platform and cross lang. communication
hope this helps