I plan on registering a domain at www.aitdomains.com later tonight, but before I do, I want to make sure I have everything right.

Can I just sign up for a free web page somewhere, and then when registering for aitdomains I point the domain there? I've seen a lot of places offer domain registration, but they charge like 7 times as much per year. Do I have to transfer my domain to oneof these places?

As an example (although I will not actually use geocities). If I get one of those http://www.geocities.com/your-name web sites, which I pay nothing for, would I just register at aitdomains.com and enter that URL as my web page? Or would I need to transfer my domain to geocities, and pay them instead?

If I'm off the target completely, please tell me exactly what I need to know.