Dell Vostro 220 graphics card help

The Vostro is a small tower, which should fit the card tell me the mobe, the specific intel processor and the PSU rating.

I just put a 5770 in the Vostro 400, which I believe, is very close to the same case. It was a tight fit but wow, this card absolutely destroys the games! BF Bad Company 2 @ 1920x1200 and High settings is absolutely stunning. My 3DMark06 went from low 2000s to 10800.

I'm asking for the power brick with the sticker with a lot of wires going out of it, it's plugged into the AC cable connected to the wall. Also I need specific specs to give an opinion. Dell isn't known to provide PSUs designed to take on a mid-range card like the 5770. Otherwise with your budget may I suggest a CPU upgrade?

I have a built-in Intel graphics card, don't know how much memory it has, but i know it isn't what i need. i Know i need a PSU, but i cannot afford a graphics card and a processor upgrade. im only 15!! i have only £150 to spare. any ideas?

im currently looking at these two graphics cards: http://www.dabs.com/Product/Compare?CompareList=6M1P%2C...

I know processors cost a lot of money, and im going for the little things first, then the big. ill give you my whole computer specs now...

... Here:

Manufacturer: Dell Inc.
Processor: Pentium(R) Dual-Core CPU E5200 @ 2.50GHz (2 CPUs), ~2.5GHz
Memory: 3072MB RAM
Hard Drive: 240 GB (upgrade to 1Tb soon)
Video Card: Intel(R) G45/G43 Express Chipset
Monitor: Dell E1709W
Sound Card: Speakers (High Definition Audio Device)
Speakers/Headphones: Microphone (Realtek High Definition Audio)
Keyboard: USB Root Hub
Mouse: USB Root Hub
Mouse Surface:
Operating System: Windows 7 Ultimate 32-bit (6.1, Build 7600) (7600.win7_gdr.091207-1941)
Motherboard: Standard
Computer Case: 17" Laptop Case

the PSU is 305W

Um I'm not sure what you mean by laptop case as it is a PC. Anyway 305W is small, so no 5770 for you. I would recommend either a 5570 or a 5670 instead. Though they are a little pricey they are more power efficient and support DX11, Eyefinity, and PCI-e 2.1. Anyway truth be told I'm 16 and can't buy online with no credit card anyway. Here are two articles to help.
http://www.tomshardware.com/reviews/radeon-hd-5670,2533...
http://www.tomshardware.com/reviews/radeon-hd-5570,2552...

I got the specs from X-Fire, thats probably why. but im looking at a 500W PSU. is that ok, or is it too much?

That is adequete, go for it, but get it from a name brand. If you don't you might find it pooping out on your the day the warrenty ends or sooner. When you mean X-fire are you saying Crossfire, then no your 500W can't handle it.

it's a gaming messenger, which tells you what rig you have, but which brands are good for PSU's? It's my first custom gamng computer

Um I'm in the US so, Thermaltake, Antec, Corsair(just don't get a Sapphire card with it, power problem) um that's all I could think of off the top of my head. Here's more.
http://ati.amd.com/products/certified/powersupplies.htm...

Ok thanks