If someone has an older version of FSUIPC, before they started with their registration-thingy (since when is buying and registering the same???). You can change all the settings, including the 'fix control acceleration'. Unfortunately I had a harddisk-crash 3 weeks ago, and lost all kind of FS-addons. I could find most of it. But I'm still looking for an old FSUIPC-version.