MilKat

hey mates
hope everyone is ok
i need somebody's help in here
im planning to replace my graphic card as my existing one is really uncompitable with some good games although i updated the driver,i have no idea what to choose, here is my PC specifications

System model:

Hewlett-Packard HP d240 MT(PC851PA)
Processor:
2.80 gigahertz Intel Pentium 4
8 kilobyte primary memory cache
512 kilobyte secondary memory cache

Motherboard :

Board: Lite-On Tech. 08FCh B04
model Number: HP-D2547F3P
BIOS: American Megatrends Inc. 1.14 02/23/2005
Module: Hyundai HYMD216 646C6J-J

Memory
760 Megabytes Installed Memory

Slot 'DIMM1' has 128 MB
Slot 'DIMM2' has 512 MB
Slot 'DIMM3' has 128 MB
Slot 'DIMM4' is Empty
Module: Hyundai HYMD216 646C6J-J

Display:
Chip Type : Intel(R) 82865G Graphics Controller [Display adapter](integrated)
DAC Type Internal
Memory Size 96 MB

Video Adapter Manufacturer
Company Name Intel Corporation
Monitor: Philips 170S [ (17.1"vis, s/n BZ 114217, July 2004)

i have no idea what things relevent to this matter but i gave most of them.

could you please tell me what video cards compitable to my pc ignoring the bugdet?!(all right ...my bundet is 100 to 400 AUD) hintlease give me as many choices as possible.
thnax a million