ActiveX Documents are embeddable OLE objects that behave more like ActiveX controls than traditional OLE objects. Unlike a normal embedded object, an ActiveX Document is not designed to be a contained object in a larger document. Instead, it is considered a complete document in itself, which is merely being viewed by a viewer (such as Internet Explorer) or is being collected into a single resource with other documents (such as a Binder file).
first of all, you website will only work on windows based systems - no unix, no apple (not even with ie there, in my knowledge, ms cancelled activex integration in mac ie, correct me if wrong).
internet explorer itself is able to open activex documents and - i forgot to wrote it first - a word document can be displayed as activex document like almost any ms office file (.xls, .ppt).
if i follow ms specs, an iframe with an src= attribute with the doc's filename as value should do the trick. feel free to check it out.