You said "DA" which to this crowd means Dura Ace - a very high grade drivetrain.

What you need to do is to either explain what type of drive train you have (at the pedal crank, are there one two or three 'sprockets'?) or start counting the teeth front and rear. What did you mean by DA?

Also the 50+ group on this board seems to have more patience for newbies than this group. Folks who aren't even close to 50 hang out there for that reason.