I have Legends registered with Network Solutions and hosted (right now) by Jumpline.
If I'm reading this right, I will be putting legendsinourownminds.com into a sub-domain of helenginger.com (my existing account on DreamHost), but when people go to legendsinourownminds it will show it as legendsinourownminds (not helenginger).
So the first step is to transfer Legends registration to DreamHost and the sub-domain will be legendsinourownminds.dreamhosters.com (I'm not sure what mirroring means, but I assume it means it will mirror the current Legends site - which is why I need to delete all the crap that's on the current site in the background) And this means I can't just create a folder with a clean version of Legends on my computer then upload it to this host. I have to cut out all the extra stuff on the current remote site because that is what will transfer (mirror).
Signed, Helen, she who is not only a neophyte but scared of screwing it all up.