right view is wonderful, i have used it for years and spent 3 days with don slaught who developed it, it's worth the money if you're going to do this for a long time.
if you need a cheap redneck way to do it, use 2 cheap dvd players and old tube tvs you can by for next to nothing at thrift stores and pawn shops. put major league hitters on 1 dvd and your guys on the other. cheap sony dvd players from walmart have frame advance features which is what you want. then use a dry erase marker to mark lines on the tv. when you're done use a spray bottle of ammonia to wipe off the screen and go again.
the nice thing about right view is you can sync the swings and get printouts when you learn how to use it. it's not that hard and i'm no computer expert. anyway that's my 2 cents. keep working with them, you're on the right path