I'm probably one of the few if not the only that do everything on the phone without connecting to the computer.
Alot of us are using Comdemned CM7 which is linked in the 1st post of this thread. Also Comdemned Soul (the dev) visits quite frequently with us.
What I do is:
1. I use I/O file manager.
2. Download the rom and anything else needed with it.
3. After download completes go into the download folder and the rom and whatever else you downloaded should be in there.
4. Long press and select move.
5. Move to sd.
6. After it's moved go back into the root of the sd card and make sure it/they are there.
7. Boot into recovery and go from there.
Lets us know if you need anything else.