i want response.redirect help.!

em working on the online trouble ticket system.....!
now i want that if user enter his username and password correctly on login.asp page then this page redirect towards the mainpage.asp.
or
if user enter his username and password incorrectly on login.asp page then this page redirect towards the loginerror.asp.

i am using the datbase file in whic username or pw is saved.

n i know that this thing is done by response.redirect

but my code is not work correctly
please help me.....

please post the code that you're using and indicate what it's not doing correctly.