AS 2 to AS 3 Migration - What's the easiest?

I’m working on a huge project which requires a large load of action script 2.0 to 3.0 migration. I was wondering what is the quickest and easiest way to get these accomplished?

Is there a tool to use that can help me with the conversions?
Is there a great guide to use that will show me the easiest way?
Are there any tutorials out there that provide information about this??

Thank you all so much!
Hope you have some good ideas for me! :love_heart:

Steph