How to suppress ARP in Windows XP

I am using a Windows XP PC which has VLC player installed. The VLC player is
used to stream a video to a Set Top Box connected to an Ethernet Bridge. The
STB is able to play back the Video. I then flood the Ethernet network with
other IP traffic. When I do this, the STB stops playing back the video
streamed from the VLC player(PC). I found that ARP responses for the ARP
requests sent by the PC to locate STB MAC address were not being received.
Therefore, the PC stops streaming video to STB. I want to suppress ARP from
PC and configure a static neighbor table mappings in windows xp.