HELP Unflashing back to Sprint from boost

[hc3cuz]

So I bought an Epic off of Craigslist today and just my luck I couldnt get it activated because the phone was previously on BOOST mobile. So no I am trying to figure out how exactly to get this thing back on the sprint network. i was reading a thread (link below) but I cant even get started with those steps because I cant even get the dam phone to connect to my PC.

[Solved] Flash EVO back to Sprint from Cricket/MetroPCS! - xda-developers

Mind you my original Epic I had connected to the PC once I installed the drivers. so I have the drivers but still no connectivity to the PC. Also Odin is not picking up the phone in download mode neither. Can anyone guide me in the right direction?