Naptime tips desperately needed!

[gravy_train]

Thank you to everyone who has taken time to respond to this post and offer kind words, advice, and tips.
Judy - when I tried CIO a couple of months ago my son's cry was much different than anything I have ever heard before, even different from when I did night sleep training. He sounded like he couldn't catch his breath. He is a very easy-going baby who rarely cries and adapts very easily to all situations. What I am discovering is that perhaps he was still having separation anxiety as he was 11 months old at the time.
I did hours of research last night and have decided to try CIO with these two again and to adjust our routine a bit so that we are home for both morning and afternoon naps so they are not sleeping in the stroller.
This morning I put them down in separate rooms for a morning nap (my son in his crib and dcg in her playpen in a room by herself with blacked out window). both had white noise playing in their rooms.
DCG cried for 30 minutes, slept for 20 and cried for another 10 until I `woke`her up with our wake-up song. My son cried for 5 minutes and slept for the entire 55 until I `woke`him up with our wake-up song.
I`ll post again with an update of how this afternoon goes.