Using creeperhost you should have ssh access. This means that if you can locate the factorio.exe file a Simple command can create a new map and load that up for you.
The command would be:. /Factorio.exe --create [SAVE_NAME] (without the [])
Then you shoud be able to start using the save with the command:./factorio --start-server [SAVE_NAME]
Hopefully this will get you somewhere in the right direction