okay, here are my car specs before i say anything
2000 Honda Accord LX, 4 Door Automatic
only mod is AEM SRI


ONLY when i start driving do i hear this high pitch squeeling sound, you don't really notice it with the windows up, when the windows are down you HEAR it, there is no sound when i start braking, when i begin breaking from 50 or so, and it starts to slow down, the sound seems to dwindle down also. when i'm idle, no sound, when i start driving, the sound begins to start up again. anyone familiar with this problem? brakes? rotos? cv joints?
NOTE:
1) i do have a splash-guard that's half-way snapped, BUT it's not touching the floor nor grinding against anything, is the wind blowing on it like a whistle?
2) i'm almost due for my brake pad changes, but remember once again the sound occurs when i'm accelerating and grows with speed, when i start to slow down with brakes, the sound slows down also, no sound amplifies or is associated with stepping on the brakes.

thanks