OK lets see if we can fix your graphics drivers so that this is easier for you.
It is possible your graphics card is bad and may need replacing.
Go to :
http://ati.de/support/driver.html
In the windows Box click on
Professional/home
In the next window choose
radeon
In the next window choose
Radeon 9600 series.
The click
go.
In the next page:
I would choose at this point the
Display driver only, it's the second choice down !
Download and run that closing all other applications/browsers.
Follow the prompts.
Let me know if that helps. Then we can try and continue cleaning your machine.
If that doesn't help let me know exactly what your seeingas far as a technicolor screen.