@tsw & calguy1000:
Thanks for your quick replies!!!
you can always take the full package and run the upgrade script to get to latest version
Yup - actually, I came across this possibility some time before, but wondered whether there would be any limit as far as the number of versions to update is concerned...
we don't really support uploading from EVERY old version out there to the latest version. usually if you're within 1/2 dozen releases you're okay, but no guarantees
Ok, true, thanks for this information. I'll try this first since it's the quickest way, right?
MAKE BACKUPS BEFORE YOU UPGRADE
Naturally!

But thanks again for reminding: it's really essential!
Then: how about migrating from one installation to another on a new server. My idea is to install the latest version on the new server and then try a MySQL-Dump of the content-tables, i.e.
- content
- content_probs
- content_props_seq
- content_seq
- module_news
- module_news_categories
- module_news_categories_seq
- module_news_categories_seq
- module_templates
... and so on, depending on the used modules etc.
I would only empty the inserts of the new installation and refill those tables with the content of the 'old' websites.
Do you think that's possible?
cheers,
zebulon