A/C Recharge

My DD is a pos 91 Integra. The AC Compressor shit the bed so I replaced it with a used one from a junkyard. Obviously the system had to be discharged to replace the compressor. Now I need to recharge it. Can I do this myself with the DIY kits in the store or do you need a vac machine for the total system recharges? Its been retro fitted for R134a.

is ur old system just running out hot air? i had a 93 cutlass that ran on the old refrigerant and we ran it dry and put in the new stuff, and it worked fine, go up to advanced auto or someplace and make sure with them, just incase there might be a problem, cuz idk how ur system is compared to my old one