D'oh! How can I have a logo?[:-weepn]

what kind of logo??? i guess you see the 'logo' on top of the screen reading Soldat Forums. I think YOU are talking of the Avatar (the picture below your name) or a signature. Read the manual!
Or just read this: First upload a Signature or Avatar file to your Soldat webspace by clicking My Page in the upper left corner of the screen and then clicking My Files. There you can upload the pictures. Then, for an Avatar, you can specify the URL of your pic as link to the Avatar picture or if you want your pic to be the Signature, just add the URL in [img][/img tags to the signature edit field.