I think I have replaced the black-on-darkblue with something more readable now
Regarding the attachments, it turns out that the new software keeps the attachments referenced in the database, whereas the old software simply had the files in a directory - and even if I upgraded gently, from major version to major version (rather than one large jump), this has not been fixed.
However, - there were only about 30-40 attachemnts, so I have instead moved the files to:
http://www.matrasport.dk/attachments - then you can either browse that dir, or modify your old posts, to include a new attachment.
of course, I could also locate all posts with attachments and reimport the attachment manually, - BUT I am very busy putting my socks in colourorder, so sorry, no time :-)
On a much more serious side, I will much rather pour myself a large Islay whisky after this upgrade-ordeal.