Arrow keys backwards

Hello, I recently corrected an issue with our software where when run on Vista, the address fields would be displayed backwards. The software is written in a Visual RPG product, and the offending fields had the RightToLeft Property set to True. This should only have had an effect on the IO field if a language pack such as Japanese was installed - at least this is the case on XP, which displayed the address correctly. Changing the property to false corrected the backwards address. I am now finding that the arrow keys behave backwards - right arrow key goes left, left arrow key goes right. Even the space bar seems to misbehave in these fields. I have compared similar fileds on the same UI that do not exhibit this behaivor, and do not see any other differences. I have tried to delete the text, update the database, and re-add it to no avail. A search of this forum and Google have not revealed anything helpful. Can anyone offer a suggestion? Thanks!