Step 1. Cut a hole in the firewall.
Step 2. Don't listen to Clay and proceed with Step 1.
Step 3. I told you not to listen to Clay... now ya gotta put up with the story about how he did it with a suit on (pink liesure suit).
In all seriousness... It's not a job to marvel over but I never found it that difficult. Loop it around the bottom. Make sure you've got the spacer washer thing figured out and put the pulley 1/2 back on. Spin on the nut and tighten. Tightening is probably the worst part.
All that being said... my car has an access panel now