having trouble downlaoding plz help

[ktrnatr]

i get an error report while tryin to download the game it goes

Error
C:/Program Files/Turbine/Dungeons & Dragons Online - Stormreach/TurbineInvoker.exe

An error occurred while trying to replace the existing file: DeleteFile failed; code 5
Accessed denied.

Click Retry to try again, Ignore to skip this file (not recomended), or abort to cancel installation


and I click retry but the error keeps popping up... some1 please help me Im so confused.
thanks much for the people that try and help, or actually help.

[ktrnatr]

what to do??? well that basically sucks