Guys,

I want to show one Modal Dioloug box (Based on certain conditions) when Any user  login to salesforce Org using Standard Login Page

Bussiness need some thing like that

1) User goes to login.salesforce.com link and enter creditials

2) We want to Show some Modal Dioloug  box like Accept Terms and Conditions  , If he agree then we want to redirect him to INSIDE

ELSE

redirect to /logout.jsp

I tried following Approach

Load a frame [Visual force page ] on Home page component and show some modal box,

But it takes some time to load the frame after login (few seconds....)

Inbetween If user click else where (like any Tab ) then he will enter in side the system

Please let me know if any other approach for it,

Thanks in Advance,

Bala