I then clicked on the Agent folder, and deleted it completely.
Then moved on to the Setup folder, and deleted Diablo3_enus
Then I crossed my fingers (important step DO NOT SKIP! :P)
then I ran the launcher again, and it worked perfectly, it stops for a small period now and again, and it updated slowly (instead of like on MY computer) but it worked.
I am figuring all this out for my wife... no clue why it's logged into her account on these forums on my computer, but hey :)
Hope this works for you guys!!!
I'm not sure I posted this in the right forums last time?