Some time ago I posted my PC, I've since upgraded alot and wanted to share what I upgraded.
My motherboard is a Gigabyte 7IXEH (not top of the line but it's what it came with and I don't feel like paying for a new one)
AMD Athlon 1080mhz processor
768mb ram currently (It's full of errors so I ordered replacement ram that adds up to 1.5gb)
One 4.3gb Seagate HD and a 20gb Quantum Fireball HD (in my IDE rack in the front)
I have a 160gb Seagate Caviar yearning to be installed but I'm lacking a copy of Windows XP to place upon it.
My gfx card is a NVIDIA GeForce FX5200 128mb (a far cry from the 8mb that I got this with)
Soundcard: Creative Soundblaster CT4780 (free from our old Dell Optiplex)
2 Serial, one Parallel, 8 USB
Drives
Iomega Zip 750
56x External CD-ROM
18x DVD+RW
Kenwood 72x CD-ROM ($0.99 on ebay, that made me very happy)
PCMCIA card reader
IDE rack (20gb HD in it but I've got a Zip100 drive that I can use in it also)
USB Hub
Floppy Drive

It's got three exhaust fans, one in the front, two in the back (One in power supply and one in the available slot above the gfx card). I don't know the wattage of the power supply, I looked and it doesn't say.
My cards in the back are:
Exhaust fan
Graphics card
Network card (not the one I want to use but that's another story...)
Wireless card
Sound card
USB Hub controller
PCMCIA controller
and my Operating System is Windows XP Home Edition SP2

Unfortunately my ram is bad and it runs very slow, a problem soon remedied but for now I can barely listen to mp3s. I have my wifi card disabled since the internet runs unbarebly slow as well. Hopefully the new memory will fix that.

Also, you can see I have space for another fan in the back, would you recommend me buying one to put there or is it well ventilated as I have it?

Pics:

i would add another fan, because the cooler components are, hte longer they will last, and the better it will run.

Quantum fireball!?

wowsers! That hard drive is around 10 years old!! They were bought out by Maxtor i believe...

EDIT: I would also suggest changing the front exhaust fan, to an intake...just turn it around

It will cause better airflow and better cooling inside your case.

Yes indeed Quantum FireBall, it came out of our old HP desktop, which we got in 1998. And thanks for the tip, I will turn it around.