Thanks Rawprawn but that didn't help at all. The program failed to detect the infected file. I've tried to delete this file but I get a message saying that the file is being used by another program. Would you know how I might delete this file from DOS? How do I det into DOS on windows xp?
I wonder do the people who suggest these fixes really KNOW that they will work. I have tried everything suggested in the above replys and nothing works. The file referred to cannot be accessed while Windows is running. Windows has to be up and running to start in safe mode. Therefore the file I'm trying to delete is still being accessed and cannot be deleted.
Anyway, I've reinstalled Windows XP from CD and everything is now OK.
Starting windows in safe mode means that only essential processes and drivers are loaded--this means you can often delete files that are "in use" when windows is running normally.This does not mean that you will be successful every time with this method.
People posting here are trying to help but that does not mean they are giving 100% guaranteed solutions- For your information trojan startpage-eh is contracted as a result of security vulnerabilities in windows.This will not happen if you keep windows fully up to date.I trust you will be taking steps to better protect yourself this time as insulting people who are trying to help s not the best way of getting advice in future.
Just to clarify a point and an answer to your query.New variants of viruses and trojans etc are released all the time. The programs we offer for cleaning your computer work 90% of the time and if they don't work then at least we know that no further harm is done by our recommendations.