is the image Id necessary, and if yes what does it do (jsut for my clarification)?

It may not be necessary now, but it is good practice to have a unique record ID in ANY table. And it's very likely to be required later, as your solution gets more complex.

alright then Image id it is. the export worked perfectly!

Am I going to need to recreate my database from scratch now (re-import everything/ imput info) or can this solution be applied to the exsisting database?

It's hard for me to say, not knowing what you have in your existing file. Note that the fields Image, File Name, File Path and Image Thumbnail are populated during import, so if you don't have them, you will need to re-import the images. If you have additional info, you can probably import it into a new solution - provided you can find a matching field.

eh, third times a charm right? Thank you very much.