power supply recommendation

i need a new power supply for my computer and i never replaced one before so i need a little help on getting one to match my mother board
i know its old don't even suggest getting a new computer i cant get one right now. plus its rude to even do that to people asking for help

upgrades

Windows XP MCE 2005
desktop computer name in side case
---Socket 478 Intel® Pentium 4 3.6 GHz HT 533Mhz Bus
---Zalman CNPS5700D-Cu Pure Copper Heat sink
---1 320 gig Hard Drive S/N Wcav2Z889710

---Memory
2 Gigs of PC333 Ram Kingston

---Optical Drives
CD / DL DVD - + RW Light Scrib Drive
---300 in One DYNEX Flash Card Reader
---Power Supplies
160 Watt Power suppy Lite-On R0 [Part #6500684]
Specifications
Part number 6500684
ModelPS-5161-2G
AC input voltage115 V/230 V
Frequency Normal 50/60 Hz
Manufacturer Lite On
Wattage 160 W
Input current 4 A at 115 VAC/2 A at 230 VAC

---5 Port USB Pci Card
---2 Port Front Side USB Bus Ports
---Hauppauge WinTV-PVR-160

---ATI Radion 9200 128mb DDR 4x 8x AGP Video Card w/ TV-Out
Type of Video Card: 2D/3D Video w/TV Support
Connectors:Video - 15 pin High-Density D-shell (VGA), Video - 4 pin mini-DIN (S-Video), Video - RCA Composite Video
AGP Support: AGP 4X, AGP 8X
Color Depth at Maximum Resolution:16.7 Million Colors (24-bit)
Refresh Rate at Max Resolution:85 Hz
Resolution:1024 x 768 (XGA), 1280 x 1024 (SXGA), 1600 x 1200 (UXGA), 2048 x 1536
Slot/Port Type:AGP
System Type: PC
Video Chipset:ATI RADEON 9200
Installed Video Memory:128 MB
Memory Technology: DDR-SDRAM (DDRRAM)


hear is the current power supply i have
My link
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factory spec

Specifications
Show Part Numbers

Following are the specifications for the Intel® (Essex2) Motherboard.
Specifications are subject to change without notice or obligation.

Feature Specification
Form Factor Micro-ATX
Processor Support for Intel® Pentium® 4 and Celeron™ processors
400/533-MHz System Data bus 478-pin ZIF socket
Memory

Support for 64-Mb, 128-Mb, 256-Mb or 512-Mb technologies
Two DIMM sockets support DDR266/333 DIMMs
Maximum system memory

256 MB (using 64-Mb technology)
512 MB (using 128-Mb technology)
1,024 MB (using 256-Mb technology)
2,048 MB (using 512-Mb technology)

Single-sided or dual-sided un-buffered DDR-DRAM DIMM configuration

Chipset

82845GE GMCH
82801 DB ICH4
82802AB 4Mbit FWH

Integrated Ethernet Intel 82562ET (Kinnereth) 10/100-Mbps Platform LAN Connect (PLC) device
Audio Chipset Audio subsystem for AC ‘97 processing using the Analog Devices AD1981B codec (analog only output jack)
I/O Controller SMC LPC47M172-NR I/O controller
LBA Support for 48-bit Logical Block Addressing (LBA)
Intgrated Video

Intel Extreme Graphics controller
AGP connector supporting 1X, 2X, and 4X AGP cards (1.5 V only) or an AGP Digital Display (ADD) card
Integrated retention mechanism

Peripheral Interfaces

Six USB 2.0 ports
One serial port
One parallel port
Two IDE interfaces with Ultra DMA, ATA-33/66/100 support
One disk drive interface
PS/2 keyboard and mouse ports

Expansion Capabilities

Intel/AMI BIOS (resident in the 4 Mbit FWH)
Support for Advanced Configuration and Power Interface (ACPI), Plug and Play, and SMBIOS

Reliability MTBF data is calculated from predicted data at 55° C (131° F)
MTBF is 112,977.7547 hours
Certifications
CSA C22.2 No. 60950/UL 60950, 3rd Edition, 2000:

Bi-National Standard for Safety of Information Technology Equipment including Electrical Business Equipment (USA and Canada)

FCC (Class :

Title 47 of the Code of Federal Regulations, Parts 2 and 15, Subpart B, Radio Frequency devices (USA)

The following table provides information about the motherboard's power usage assuming a 2.0-GHz Intel Pentium® 4 Processor with 512-KB cache is installed.

Mode AC Power DC Power At:
+3.3V +5V +12V -12V +5V
ACPI S0 61.0W 3.02A 0.12A 0.99A 0.014A 0.22A
ACPI S1 53.9W 2.91A 0.11A 0.68A 0.014A 0.16A
ACPI S3 4.3W 0.0A 0.0A 0.0A 0.0A 0.45A

Can you post the Make and model of your computer? Nothing you posted gave any indications of size or shape.

How old is it, Some of the older gateways for example took a non standard size power supply. As do most slimline HP, Dell etc. computers thus a Dell 530 uses a different power supply than a 530S (S for slimline)

With the make and model someone should be able to help.
For example the one you provided the link to says it is for a Gateway and that it was pulled from a working optiplex gx720.

It looks Like a Gateway power supply. I've never seen one that looks like that in a Dell.
The one shown looks like the non standard Gateway that is deeper than it is wide at the plug part. Can you measure your old one?

Roger

gateway Essex2 with the mid tower micro atx power suply or something that the power suply is in the link is the same model that is in mine

The one in the Link is a ATX type, a Micro ATX is much smaller.

Time to break down. Take some pictures, make some notes of what goes where and take the power supply to a computer store to get the right replacement.
Or if you are very sure that the one in the link is the exact same as your old one then it is a standard ATX Power supply. In that case any ATX Pentium 4 power supply will work. Most likely you will find a 20+4 ATX connector. That means it can work with a 20 pin or 24 pin motherboard.

To change it sit the new one alongside the old one and do one plug at a time.

Good Luck
Roger