My Movies Stored on External Hard Drive

Hi, I’ve recently purchased Apple TV 2nd Generation… I’m just wanting to have a questioned answered if possible, in regards to ATV Flash Black?

My Question: Main reason for Apple TV 2nd Generation and ATV Flash Black, is to watch my movies, which are currently stored on my Portable 1TB External Hard Drive, this Hard Drive is constantly connected upto my 21" iMac, which always connected to my wireless internet. Will Apple TV2 & ATV Flash black pick this up ok, in regards to watching my films straight from External Hard Drive/iMac?

A response would be greatly appreciated.

dillmin.

Not sure if I’ve found what I’m looking for with this link from Knowledge Base…?

http://support.firecore.com/entries/20655156

For some reason I absolutely cannot get this to work for me. I follow the instructions exactly, my computer shows up under shares, but my USB hard drive that I have added to the shared folders does not show up at all. Driving me insane. I feel like I’ve paid $30 for Plex at this point.