Hi Harold--sounds like a great start! A couple of other resources to look at. . . For the past 6 months, I've been working on a Wiki for using Web 2.0 in Nonprofit settings. I have a page full of resources on blogging here.

I've also been working on some mini lessons related to Web 2.0, with some intro to technology stuff here.

If you end up using blogger, there are some video tutorials here and a Video tutorial on getting started with blogger here.

There's also a good activity to introduce blogging using paper that's available here.

And finally, there's a wiki on teaching with blogs here.
Good luck--sounds like a fun workshop!