Problems with installing new graphics card

Ok so I am trying to update my family's pc. I have a good rig, but my sister wants to play sims 2 etc. on the older pc so we got a cheap Asus HD 4670 to run on the family computer.

The OS is Windows Vista 32bit. The old card was in the X1300 series; almost the worst you can have. And yes its a dell.

So I have uninstalled the old drivers in the control panel add/remove programs section. Then I downloaded Driver Sweeper, and it removed all the old drivers in safe mode. Then, when I reboot the pc, everything is all big, the resolution is bad, the icons are huge...I'm guessing, looking under device manager, that I'm using the integrated graphics on the MOBO.

When I insert the disc for the new card's drivers, windows can't recognise the disc. I can't get the new drivers installed because it won't even launch the disc. Is that because I need to disable integrated graphics first...or what?

I am pretty sure the GPU is installed correctly. Its a Dell, so the clip system will not lock unless its in correctly. EDIT: the fan is also spinning. It also draws all the power from the PCI-E slot.

Any help would be much appreciated :)

Never, ever, install drivers from the disc. Go on ATI's site and download it from there.

hmm ok I'll try that and get back to you

no the cd drivers should be fine.. your full of trash.. but its worth a try none the less.

i had an hd 3870 crossfire setup and they run beautifully and i started with the cd driver. just be sure yours are up to date and you installed catalyst.

Actually, rather surprisingly, its all up and running downloading it from the website. Cheers all :)