Power supply for Presario desktop PC

I've got a Compaq Presario 5000 5WV254 for which I want to get a new
power supply. I am pretty much in-the-dark as far as power supplies go.
People in this group have assisted me in the past with other issues and
I'm hoping someone can again.

Would the following power supply work in my PC? (If not, do you have
any suggestions for a different power supply that would work?)

http://www.enermaxusa.com/catalog/pr...products_id=83

The PSU has the correct dimensions and says it will work with either
PATA or SATA drives (I've got two PATA drives).

Is the voltage information correct? I have no idea how to determine
this but I do have the original 250-watt unit handy if any information
from that would help.

Will it connect to the Compaq motherboard?

Will the PSU work with the single-core Duron processor? It says it works
on dual-core and I have no idea if it will also handle single-core.

Are there enough connectors?

Presario 5000 5WV254
AMD Duron 700mHz
768MB ram
Dual-booting Windows ME and XP Home
2 IDE internal hard drives
- original 20GB Quantum Fireball as extra storage
- added 100GB Maxtor DiamondMax (dual-booting ME and XP Home)
2 IDE hard drives in external Nexstar enclosures (these are only
connected when necessary to access files stored there or to backup
files):
- 100GB Maxtor DiamondMax
- 160GB Maxtor DiamondMax
2 optical drives:
- original Compaq CD-ROM
- added Memorex CD-RW/DVD-ROM
USB ports
- original 2 front and 2 back ports
- added 5-port Belkin USB 2.0 card
- added 4-port Belkin external USB 2.0 hub
Original graphics card
Floppy drive
Dial-up modem
Added Belkin ethernet card (not yet in use)

The story:
A year ago I replaced the original 250 watt PSU with a 480 watt one from
911forPCs.com (they provide replacement PSUs based on brand/make/model
without the buyer having to get into the specifications).

The power supply fan was very loud (like an airplane engine!) but I
lived with it until the fan started to malfunction in September. Since
it was still under warranty, 911forPCs sent me a replacement. I've only
had the replacement a couple of months but the fan has already "acted
up" three or four times and is as loud as the first one

I don't want to go the 911forPCs route again so I'm trying to find a
suitable replacement elsewhere.

Thank you for any assistance you can provide.

Nancy