Hi Terryphi, I'm really really new to this sort of stuff so please excuse my ignorance if I'm doing things wrong. I'm using codeweavers trial for mac which I think is current as I only downloaded it a week ago for the purpose of running Quicken. I've been looking for a way to change the date from US style to our ddmmyyyy format as what you were investigating. I followed your steps by finding and changing the parts of user.reg and win.ini and ran Quicken without any change in behavior. I have rechecked the files and they still have the dd/MM/yyyy Any suggestions? Is wine easy enough to install by itself if its codeweavers implementation causing problems? Thanks.