If you exported all your contacts to SD, then you can simply import them back again with the contacts app
There are newbies, then there is mere stupidity!
Numbers are back!!!!! Moved from HTC contacts (which i couldn't do with CM7)! Numbers are jumbled with Google email contacts but thats fine - I will sort manually over a bottle of vino! App data is gone but as you all have said, will put that down to an experience. I may start a ROM Manager boycott campaign!

Guys I cant thank you enough. Special thanks to Hadron for his commitment and lenghty, detailed and well explained responses.
So pleased! Take care

) and booted from recovery. At first, I got the same blue screen hang as before. I pulled battery and decided to call it a day. I ran the latest nandroid backup that I did moments earlier and it brought up my old system with everything! Unbelievable! I have no idea how this happened.