Migrants to IJ, 2007

I hope this is all right to post here.

Back during Strikethrough, I used Snapetoy's post on how to set up Semagic to simultaneously post to multiple journals and have been happily doing so. However, I got a new computer this week and realized I don't remember how to set that up, and of course the post was on GJ and is now history! Does anyone remember how?

Thanks in advance to anyone who can help me.

ETA: Thanks to eemilyvr1 for the link!