Ok, i decompressed my AC took my engine out, swapped a new one in, now what do i have to do to restore my Air Conditioning? and for the time being is it necessary to do this to get my car running or would i just be without Air conditioning?

 

Hopefully, you didn't just vent your AC to the atmosphere... But alas, I fear you did.

No you don't have to have your AC running when you get the car running. To re-charge your AC you'll have to take it to an AC shop and let them purge the system, and then re-fill it with Freon...