Thanks FJJP. I used to work in IT too but perhaps I left because computers just don't like me! I thought everyone had the same problems but perhaps computers dislike me more than others!
This started when my PC was infected with a trojan, which I could not get rid of so I did a C:/ drive format.
Thought we were getting somewhere yesterday, got the processor and the sound working, then when I tried to access the internet the USB ports were not working!!!! So I could not use my USB wireless internet receiver.
Anyway, I had already used the CD drivers, but since the system was not working anyway I am reinstalling Windows again and will use the drivers you suggest Richard. Hopefully it will work this time!