Email Post

I use network solutions as my server + email providor. They have the pop mail/webmail, etc solution. I am trying to set up the email posting capability where I can email to a certain email address and it posts in a certain category within my blog… I did read all about it on here first, I think I have the settings correct (although if I did I wouldnt be posting this)… I cant get it to work… I dont know if its the push technology that blackberry uses or what… setup is similar and I got that to work… Any ideas?