Yes. It takes a fair bit of work. More than I care to explain here. Basically search how to set up a self-hosted dedicated Valheim server. Copy your world save (2 files, .db and .fwl) to the Valheim (not Valheim server) worlds_local folder on your server computer. Then when rewriting the start_headless_server.bat. reference that world in the world name (not server name) spot. Then rename the file as start.bat or myserver.bat or whatever, so it doesn't get overwritten when it gets patched.

Good luck.

Thank you, much appreciated! Will give it a try now

All the best and thanks for your time