Back pain Spinal Cord Simulation?

I have dealt with lower back pain since 2005. We have tried everything except surgery, so we are going to try this out. I am googling this procedure, but not really satisfied with what I am finding, is there anyone who can tell me what they experienced when they had this procedure from beginning to end? Did they knock you totally out (when I had shots in my back, I had to be sedated I couldn't handle it) so I am hoping I can be knocked out for this procedure. I just want to know what you had to do to prep, and how much time off from work you had to take, I am guessing a day? Any info given will be appreciated. thanks!

xoxox