I'm afraid I don't quite follow exactly what you're getting stuck on. Is it how to get the keys back from the rows you just entered? There have been a number of posts and articles on this site discussing how to do that.
Dan Guzman - Not the MVP (7/22/2010)
All questions have to be prefaced by Server version and 'according to MS Docs' or 'my own personal opinion based on how much detail I felt like digging into at the time.'