So after trying to download the rom I needed to flash, all day at home, I went to Starbucks and used their wifi, with the same result. So I went to my brothers house, and finally got it downloaded.
It ate my whole day...
I used Odin to flash the rom, it took about 8 to 10 minutes and it was done.
I used the rom that wouldn't wipe anything, so to my surprise after it booted, i was about to install clockworkmod and flash back to my backup, just like before trying to install cm10! FOR THE WIN!
I am currently copying the entire clockworkmod folder from my phone to the external micro sd card, just so I have a back up if this ever happens again.
So as soon as thats backed up, I'll flash CM10.... More to come soon.