I used to hate kitchner stitch, but after my grandmother (she taught me to knit) poked fun at my kitchner stitch and told me I needed help (in a loving way) I went online in search of videos to help me with the stitch. I just didn't get it from the written directions - watching a video helped a lot.
I found this one on Youtube - there are a lot, I think this is the one I watched. http://www.youtube.com/watch?v=3ZTxeHz7rtw
Here is an article with pictures: http://knitty.com/issuesummer04/FEATtheresasum04.html
Once I got it, I actually do prefer this for my socks instead of running a thread through. I even do it for the top of hats, especially ones that I don't attach a pom-pom to.
I don't think that there is a way to 'sew' them together without a seam unless you graft
If there is, I would be interested in finding out.