Thanks Gentlemen both.......
Liam......
The file path is E:Install\Ereg\ereg32.exe but submitting it to Kaspersky doesn't come up with any results so a bit of a puzzler, really.
Mike.....
The fact that the problem only affects W98 & W95 is encouraging but quite why the thing is there in the first place is still a little worrying.
Ta, chaps!
N o t a