Electrical in 50 year old house - what to do

[Troy Welch]

I am rehabbing this 1st property.  Part of closing negotiations was that they replace the breaker box.  They hired a professional electrician who installed a 125 amp breaker box.  It looks like they did a very good job - I'm no electrician, but it looks better than the previous.

Most outlets/switches are 2 wire.  What do you guys recommend I do at this stage? 

I found this information on Homelectrical

The Consumer Product Safety Commission (CPSC) only recommends the following three methods to fix aluminum wire problems permanently

1. Completely replace your home with copper wire
2. Pigtail the aluminum wire ends with special crimp connectors called COPALUM
3. Connect the aluminum wire ends with aluminum to copper

Any other ideas from the pros??? I am hoping you don't say rewire... Is there a maybe a staged approach?

2nd post - You guys gave a LOT of good feedback on the insulation / vapor barrier post - Thanks a LOT.