Hello,
When it says in this guide
7. Now you'll need to run a Rom Update Utility (RUU).
Some of the custom roms come as executables, so all you have to do is run them.
Others are just a single file that ends in .nbh. For those you will need a RUU.
>>> a. Click here to download an empty RUU
>>> b. Copy the .nbh file of your custom rom into the RUU folder
>>> c. Make sure there is only one .nbh file in the folder
>>> d. Double click RomUpdateUtility.exe to begin the update
When I try to download the file it wont let me, I looked at the URL on internet explorer and it says: ftp://up.ppcgeeks....n/roms/RUU.rar
Im missing some stuff, someone please help me, I want to upgrade rom today 
!!!!!