Hi again,
Re your first reply, now I do need a 64 bit driver, so how could the one on the CD work since in 2004 XP was only 32 bit (as far as I know the 64 bit versions came out in 2005)? So it looks like I'll have to try the Vista one. But I'm wondering whether one of the later, Windows 10 compatible, drivers that claims to work for the Visioneer 2400 might work better? I have found some photos on-line where that model looks just like the Xerox one - but others where it doesn't! Any advice?
Maybe something for W7 or W8 would be safer than the Vista driver, but without going through all the drivers for all the models on the website to see if they are compatible with the Xerox One Touch 2400 (or that Visioneer 2400 - if it is the same thing) it's not easy to know what best to do.
I may sound a bit paranoid, but I really do not want to mess up this computer as I'm having other problems with it.
Anyway, thanks for the squirrel photo: I think it just realised its XP was gone and it was stuck with Windows 10.