Preview will preview every record in your found set. If you only want to preview the current record, isolate it in a found set by itself.
When you print from filemaker you should find a control in the print dialog where you can print either Records Being Browsed, to print the found set or Current Record.
If you are a Mac user and have filemaker 11, there's a bug that may keep those options from appearing in the print dialog:
This is one of many bugs listed in the Known Bug List here in the forum.