That should mean that all the covers are in a folder somewhere. On the machine that you moved from, can you find a folder called Covers? The files in this folder will be *.jpeg or *.jpg and some will begin with numbers - all should have incomprehensible names (00e38d00.jpeg for example).
Thanks for your patience. I have the file "Boxset covers" and all the pics are there but when I try to import into my db. using database>manage db> import, it is looking for a db. file. How else can I import these missing covers? incidentally if you see my other cry for help under "Covers" the use of ODB just doesn't work. It NEVER finds the covers or any information.
Please try this:
Copy the content of the "old" folder with the covers to the "new" folder with the covers. After that start OrangeCD und look if it has worked.