oscommerce to ebay cvs conversion

I am a market trader that knows nothing about computers So not sure what is involved for what I want or what program I should buy or how to use it when I do . So will explain what I need and leave it you experts to sort out what is required. I sell some stuff on ebay with some success and now have a oscommerce web site with a easy populate page on, with ebay I use the turbo lister cvs files to edit my items . Now I understand that the easy populate page will download all my ptoducts from my web site into a text ? file on my computer but the files will not have the right fields or format for turbo lister to understand, What I want to be able to do as a novice is to transfer my products from my site into a cvs file that turbo lister can use to import to ebay and of course vise versa,(or anything better) So in effect if I have 50 products on my web site I can quickly transfer and edit them into ebay and of course vice versa. So what ever works and does the job ++++++++++END++++++++++