him, i would detach your drive, and re attach it to the case, put the screws on both sides in both slots, make sure it is perfectly straight, and very tight to the case. also is your case open? if you close your case the noise level goes down.
Athlon XP 1.58GHz | MSI KT3 Ultra2 | 256MB DDR PC-3000 | GeForce 4 ti4200 64mb @ 310/533 | IBM 120GXP 40.0GB | Det. 41.09 | DX 9 RC2 | Win XP SP1