didnt i answer this in another place??
anyway just get teh SATA cable and Hard drivers the mobo will detect them fine and yes any 2.5" hdd should work fine
does this happends with any movie you try to play ? just some moviews? is it in Vista or Xp? have you try changing the power scheme to always on and then play the movie?
if your mobo is version 5.3 or better just get the Sata cable and the HDD and it will work fine, any slim laptop hard drive will work fine. i like seagates HDD
if you use the respanw kit you dont need to install the drivers, if you use the windows CD then yes you can use the second CD called utilities that has all the nescesary drivers, as for teh second drive just format it.