You don't need ecc ram, unless you are running a server or something. Non-ECC is the type to get (plus that motherboard doesn't support ecc).
One word of advice. You get what you pay for, with ram memory. It's best to buy brand name, quality ram. Less problems, and more stability.
CPU - P4 2.4C, 800FSB W/HT - CONSERVATIVELY OC\'ED
MOBO - GIGABYTE GA-8KNXP 2.0 875P CHIPSET/DUAL BIOS VER. FE
RAM - 1GB (2X512) OCZ PC3200 REV 2, 400MHZ 2-3-3 6
VID CARD - ASUS RADEON 9600XT 128MB W/VIVO
FLOPPY - SAMSUNG 1.44M
HDD - MAXTOR 120GB 7200RPM ATA133 EIDE W/8MB BUFFER
DVD - LG GDR8162B 16X IDE DVD ROM
PSU - ENERMAX EG465P-VE FC 460 WATT
VANTEC VP4-C7040 AEROFLOW HS/FAN
5 X VANTEC STEALTH 80MM CASE FANS