FTP Uploading Question

This maybe like the noobiest question ever... but...

How come when I upload stuff in the FTP program, I can access it through my ftp site (ftp://www.mydomain.com) but not through my real site (http://www.mydomain.com).

For some reason I can't access anything on my real site but I can through the ftp site...

You probably uploaded to the wrong folder. Usually, you need to upload to a folder named "public_html" which gets mapped to http://www.domain.com/.