please help and advise

I would like to upgrade slighty my graphics card as have quite a basic PC motherboard is FC gigabyte ga-8i915pmd power supply fsp group model fsp 250-60 gen spec Windows XP Home Edition Service Pack 3 (build 2600) Packard Bell NEC Packard Bell Computer PB34232101
System Serial Number: 049699920742
Chassis Serial Number: 50424E
Enclosure Type: Desktop
Processor a Main Circuit Board b
3.07 gigahertz Intel Pentium 4
16 kilobyte primary memory cache
1024 kilobyte secondary memory cache Board: NEC COMPUTERS INTERNATIONAL GA-8I915PMD
Bus Clock: 133 megahertz
BIOS: Award Software International, Inc. 10i 01/13/2006
Drives Memory Modules c,d
151.64 Gigabytes Usable Hard Drive Capacity
127.14 Gigabytes Hard Drive Free Space

PHILIPS DVDR1628P1 [CD-ROM drive]

ST3160812AS [Hard drive] (160.04 GB) -- drive 0, s/n 5LS1RM79, rev 3.AAE, SMART Status: Healthy 2048 Megabytes Installed Memory

Slot 'A0' has 512 MB
Slot 'A1' has 256 MB
Slot 'A2' has 512 MB
Slot 'A3' has 256 MB
Local Drive Volumes

c: (NTFS on drive 0) 32.20 GB 13.50 GB free
d: (NTFS on drive 0) 119.44 GB 113.64 GB free

Network Drives
None detected
Users (mouse over user name for details) Printers
local user accounts last logon
me 11/11/2008 16:56:04 (admin)
local system accounts
Administrator never (admin)
ASPNET never
Guest never
HelpAssistant never
SUPPORT_388945a0 never


Marks a disabled account; Marks a locked account HP PSC 750 on DOT4_001

Controllers Display
Intel(R) 82801FB Ultra ATA Storage Controllers - 2651
Primary IDE Channel [Controller]
Secondary IDE Channel [Controller] NVIDIA GeForce 6200 LE [Display adapter]
Samsung SyncMaster [Monitor] (17.1"vis, s/n H9NYB30807, November 2005)
Bus Adapters Multimedia
Intel(R) 82801FB/FBM USB Universal Host Controller - 2658
Intel(R) 82801FB/FBM USB Universal Host Controller - 2659
Intel(R) 82801FB/FBM USB Universal Host Controller - 265A
Intel(R) 82801FB/FBM USB Universal Host Controller - 265B
Intel(R) 82801FB/FBM USB2 Enhanced Host Controller - 265C Realtek High Definition Audio
Communications Other Devices
Motorola SM56 Data Fax Modem


1394 Net Adapter
NETGEAR WG111T 108Mbps Wireless USB2.0 Adapter
primary Auto IP Address: 192.168.0.3 / 24
Gateway: 192.168.0.1
Dhcp Server: 192.168.0.1
Physical Address: 00:14:6C:0D:33:B6
Realtek RTL8139/810x Family Fast Ethernet NIC
Dhcp Server: none responded
Physical Address: 00:14:85:C6:87:C7

Networking Dns Server: 192.168.0.1
Texas Instruments OHCI Compliant IEEE 1394 Host Controller
USB Human Interface Device
Standard 101/102-Key or Microsoft Natural PS/2 Keyboard
HID-compliant mouse
USB Root Hub (5x)