clav:

Perhaps the "Style" you've chosen is a "swing" style, shown in the Style Pick window as "sw" next to the style name.

If that's the case, then the "Editable Notation" window will show each 1/4 note with 3 vertical dashed lines. Then you'll get triplets when you enter the notes on each vertical line.

If you pick a style that's indicated as "even" (EV), then there will be 4 lines per 1/4 note. Entering a note on every other vertical line will give you 1/8 notes.

Let us know if that's not the problem and we can do some further explaining.

Good luck!
LLOYD S