1. winsvc.exe is the name of a file used by the windows operating system, but there are trojans that can use the same name with the file in a different location. http://www.file.net/process/winsvc.exe.html
2. since this is a windows system file, it should not appear on your ipod. the ipod doesn't have anything to do with that file, so you can go ahead and delete it.
3. your AV program is probably right.