我的电脑是英文系统,step 7的帮助不能用,点下帮助的时候显示the d:program files \siemens\step7\s7kafhdb.hlp help file was created for a language not supported by your version windows. the % help file was created for a language not suppored by version of windows.怎样才能解决那,最好说的详细一些