stick post problem

hi i have the wp-sticky post plugin installed in by blog but the sticky function not working. but the announcement post is working. example… i have post 1 – posted day1, post 2 – day 2, post3 – today.

i wanted post 1 to appear as the first post in the index page so i made post 1 sticky. nothing is happening. the post order didn’t change. any way to fix this?????