Trojan Horse in MySQL

[Gary]

I have installed Apache PHP and MySQL over a year ago on a WINXP machine 
and suddenly a file, presumably there all that time is found to be 
infected by an upto date Norton anti virus program. 
Norton does not say what trojan horse. It cannot quarantine nor delete 
the file so I stopped the MySQL process and renamed the file myself.

File is:  C:\mysqldata\erqed.dll
Anything known about this?

please reply to [EMAIL PROTECTED]

Gary