Post few data to a form using post method and return result

[wxdqz]

I want to use ASP code and XML to post few data to a form using post methodand return the web page, when people call the page.like I want to login to mail.yahoo.com, and I design a page, everytime Icall the page it will automaticly login to mail.yahoo.com and return thepage to me, by using post method to post.