Using the wp_insert_post function

I have an administration application on mny deal site, when people add a coupon, we automatically create a post in mour forums formthe same form. I was looking to do the same to my wordpress blog. At first I tried just inserting into the DB, but then I found what looks to be a very useful function, but after including the post.php, functions.php and plugin.php so all of the called functions have their neccesary functions. It led me to include cache.php .

Now I’m getting an error saying that I performed get_ on a non object. I’m new to using object in php so I figure there must be an easy way for me to clal this function from my other programs that I must be missing…

can anyone point me in the right direction?