Root my EVO wihtout USB cord I want to root my EVO... but my charging port is broken (I've been using an external battery charger to get around this). Anyway to get the files I need to root my EVO onto my EVO without using this cable? I was thinking about going through Box or Dropbox or something like that but I'm not sure how to download these files into a specific folder on my EVO.

Thanks.
You can always put the files on an SD card and transfer them to your internal storage from there, but as was said in the comments, if something happens during the process and you are unable to boot your phone, the only way to recover from that is to reflash it from the computer, using the usb cable. You can use Titanium Backup to back all of your apps up onto the SD card, and hopefully you keep everything you can backed up through Google, but you still would have an unusable phone if something happened.