Identification, upload, instiki

I recently let dream-host a domain.To this end I have to do the identification at google. But the google-username I remember is probably incorrect. Now I have no access to google apps to activate my domain.
Google says, that the only way to retrieve the username is via the identification…

An other maybe related point is, that I do not see how to upload files to my domain. The panel at ‘‘manage domains’’ at dream host seems not supply such action (there is no button with such label there).

Once this problems are solved I would like to host a instiki wiki at this domain, which until now is running local at my desktop machine. What do I have to upload to the domain to this purpose.
I would by thankful for any support