Can’t re-install 7600 USB scanner

A few weeks back, I had a virus, got rid of it, but had to reinstall windows, but this time I used 98-SE, ever since then I can’t get my scanner to work, Keeps saying there is interference, and list some things all wending with DLL’s. What can I do. The yellow light is lit but not the green one, It did light up once, but then went back out again.