I've just managed to solve one of the problems. I very stupidly was working on the wrong version of my files - sorry about that. I've got the right buttons showing now in the editor but still do not have the styles in my drop down list. I can see the contents_update_ContentValueStyles.xml file that it has created and that has my selected styles in it. I've checked it is on the server ok and when I uploaded the iRite folder I selected all the dependent files. Not sure what else to check?
Could you also tell me whether it is possible to allow the client to upload pdf files please using the CMS?