You didn't mention your operating system or FMP version but on mine (OSX 10.6 FMP+ 9) there is a "Specify Font" menu in the Font tab of the FileMaker Preferences dialog.
I also found if I first set the number format and colours, etc. without selecting a field, it maintains these settings until changed.
Hope this helps…
Thanks jade, any idea why filemaker is formating number fields as currency? Its only in one database this happens (built from a starter solution)
Probably currency was the last format set for the starter solution and hasn't been changed. If you choose the general number format (without selecting a field) and then close and reopen the file, does it not then use the general format?
Any existing number fields will maintain the prior setting. If you've selected and specified number format without fields selected, that will become your default on NEW fields placed on layouts. Older fields will have to be manually changed.
BTW, there is no need to close and reopen the file. The change is immediate. But it will not change prior fields (and this is true on font, style, etc - only new fields will be affected by default settings).