Technology is awesome but sometimes it is just a little much. Trying to get your head around Reason is one thing but then trying to get your head around Re-wire and integrating that with your DAW is a completely different beast altogether.
Why would you want to do this anyway you may ask? Well Reason is great for what it is, but you can't really mix within reason. Sure there's a mixer and mastering tool, but compared to the flexibility of VST FX within a DAW it is rubbish.
If you are the sort of person that just wants to get it done now then this quick tutorial will show you how to get separate audio files out of Reason for each instrument for later import into your DAW of choice. And it's way easier than you thought.
As Propellerhead haven't put this functionality in themselves you have to do it the ghetto way. Simply start with the first instrument and click the S next to it to solo it. Check all you hear is that one instrument and then in Reason click File > Export Song as Audio file and name the file appropriately i.e. Bass1
Repeat this for each instrument, and in some cases each multiple track of an instrument. If you've used Re-drum you might want to do this for every entity i.e. Kick, Snare so that you can have full control of these items at a later date in your mix. When working with lots of Re-drum entities this can take a while but it is well worth it afterward for the mix control you have.
Once all of your instruments have been exported as separate files open up your DAW and then import those audio files into a new project there. Make sure you make the DAW project the same BPM as the Reason project so that everything can stay on grid. Now you can add vocals and whatever else on top and get yourself a really banging new tune! Simple as.
Who needs re-wire?