Does anyone use Instant Adsense Article Directory?

I just recently put this on my site and I would like to change a couple of pages. The problem is that the code doesn't look familiar to me.

If anyone uses this and has been able to edit the pages please let me know.

One page as an example, when a person signs up to be a member they are directed to a page that only has the heading and sidebar. The body is blank. I want to add a message that tells them to check there email for the account info then come back to login.

Any help with this would be great. Thanks