I am not a (the) moderator, but the best experiences I made were:
Put together all (!!!) text, pictures into a single document (using open office or microsoft office) and then create a single PDF-file which you can upload here if it is not too big. If it is, you'll have to split it into several documents. PDF-format automatically compresses the contents, so there is no need for an additional compression.
Happy uploading
Bob
