WordPress on localhost to *.wordpress.com

Hi,

I have developed my site on localhost (there is lot of customizations, plugins, own theme etc., database, lot of posts etc. ) and now I look for easy way how to uplaod it on wordpress domain. On my own domain/server it is esay but i do not know how to do it on wordpress domain. When I want to upload on wordpress domain have i to ftp access and some phpadmin or something like this ?

Thanks in advance !