Thanks for all the info!!
Didn't know, that there was a bootstrap, but i got it running now.
The only problem is now, that when i copy my wallet.dat, fater synching, it gets on the wrong chain again.... so i'm going to do this all over again. But how can i get my wallet.dat integrated, without the wallet jumping on the wrong chain?
1. Stop your wallet right away, backup your wallet.dat.
2. Download the right wallet from
https://github.com/FuelCoinTwo/Fuelcoin/releases3. Delete your roaming folder AND RENAME YOUR WALLET.DAT TO BACKUP.DAT
4. Download bootstrap from
https://github.com/FuelCoinTwo/bootstrap/releases/download/latest/bootstrap.dat and extract it in your roaming folder.
5. Start the new wallet
6. When wallet has started A NEW WALLET.DAT has been created. Verify on the blockexplorer here
https://chainz.cryptoid.info/fuel/ if you are on the right chain.
7. Delete new created wallet.dat and RENAME BACKUP.DAT BACK TO WALLET.DAT
8. START WALLET AGAIN WITH COMMAND PROMPT:
Fuelcoin-qt.exe -reindex -rescan