Oh I think I understand the problem. Wow been so long since I did this from scratch. But from what I remember you 1st have to register with most of the major blog aggregators so they have a record of your blog. BUT after you do that you just ping after each post and it automatically updates them all.
When I did the initial set up I used a service that submitted my feed to all the RSS Submission Sites. I can't find the name, was sure I had it bookmarked and also have talked about it here, but now cant find it. It was only $3 to submit to all the majors back then.
This may help:
rss submission - Google Search