Sub-domains using WordPress and One.com

Hi there!

I registered an account at one.com a couple of months ago, but found it hard to maintain easily. I ended up downloading wordpress, thinking this might be a better solution.

The point is that I want two sub-domains (blogs) to work with my main domainname, one of them as a totaly private one with individual passwords for several users. My parents are going to use the “hidden” blog, wich means that it needs an “easy_to_understand_setup”.
They should also be able to login easily from their own computer, and not have any control over my main domain or blog number two.

With the subdomains I mean like this:

example.org
subdomain.example.org
subdomain2.example.org

How would I do this?

Any answer wich make sense would be appreciated! ??

With best regards Hypsnos