I'd prefer to do this over email, as this will probably take quite a few posts/emails to completely resolve. My address is on my profile or if you hit the email icon under this post.
I have already bought a new modem because I didn't have the driver, and the windows couldn't detect my internal one, and the problem is the same with the colours I think - no driver.
Ok, we need to confirm a few things.
Right click on My Computer, select Properties.
Select the Device Manager tab.
There probably won't be a "modems" category, but under the "display" category, it will probably say "VGA adapter" or something similiar. Under the "other devices" category is all the devices Windows is unable to do anything useful with, you'll probably find "unknown modem" and "unknown VGA adapter" or something similiar. This will confirm what you think is wrong. Tell me what's under "modems" and "display" if anything, as well as "other".
When you start getting working drivers for your hardware, those unknown items will start disappearing and appearing in their respective categories instead, and so you'll know you're winning :-)
The hardware probing software that someone suggested is only likely to tell you what hardware that Windows knows you have already, which isn't of much use to you.
There is a possible easy way to find out what graphics card your PC has, but not all graphics cards do this. If you re/start the computer, the very first text you see is only a few lines long at the top of the screen and will quickly (like within a second) disappear. If your PC does do that, you might be able to read it off and get all the info you need. Give me a shout with what it reports.
If that method doesn't work, then things get a bit more difficult, ie. you need to open your PC, and read off what it says on certain chips in it. I can guide you through this, but insides of PCs vary quite a bit so it's not going to be that easy.
The one other thing that might help in finding out most of what we need to know is if you can give me some sort of model name of your Packard Bell box, I might be able to find some details on the Internet.
Am I right in thinking you have Internet access or not on that computer, btw?