New to O/C: Corsair 2xTWINX1024-3200XLPRO

Hi, all. I upgraded my ASUS A7N8X-E Deluxe AthlonXP 2600+ with a matched pair of Corsair 2xTWINX1024-3200XLPRO but they doesn't seemed to work without hunging up my system when I change BIOS defaults. So, please help me... Thanks in advance

ps: BIOS settings are as followed
CPU External Freq. (MHz)....: 166
CPU Frequency Multiple......: Auto (x11,5)
Memory Frequency............: 200
Memory Timings................: 5-2-2-2-2T
CPU Vcore.......................: 1,65V
Graphics Aperture Size.......: 64MB
AGP Frequency.................: Auto
DDR Reference Voltage......: 2,6V
AGP VDDQ.......................: 1,5V
AGP 8x Support................: Enabled
AGP Fast Writes...............: Enabled

give the memory more voltage. I believe Corsair spec says 2.75v for 2-2-2-5 timings at 200mhz. Some can do it with less voltage but some can't.

you should keep the memory frequency the same as your CPU external frequency.