Post your points on the basis of the beautiful combination !!
CPU Pentium VI 2.66GHz
Mainboard MSI 865PE Neo2 - LS
Video Card Leadtek A280 Le TD DDR 256MB
Hard Disk Maxtor DiamandMax9 80GB Buffer 8MB & W.D. 40GB Buffer 8MB
At what speed is your memory running? I see you have PC2700. Ideally, you should have two identical modules of PC3200 RAM running at 200 Mhz in dual channel mode.