Sample NSIS scripts

I'm currently writing some tutorial scripts for a couple of other people. The attachments to this missive are 2 versions of the first tutorial, meant to be examined together.

I was wondering if someone could take a look and tell me any mistakes I've made, or if the thing even makes sense.

I took a quick look and they look fine. Please also upload them to the Wiki once they are done. I'm sure others will find it useful as well.