Thanks, I'm glad my site inspired you.
I'm hoping that the transition from 7.x to 8.x won't be so bad. Hopefully the variables I rely on haven't changed. I have't installed 8.x yet because I'm waiting for the stable version, like I said before. I also want to see what the problems are and how to avoid them. We lose money if out site is down, so I can't afford to make big mistakes.
I'm thinking of going to MySQL to get away from MS SQL, but that would mean I would have to rewrite most of the site. So I may just live with MS SQL for awhile.
One interesting thing that I did, that may be useful for some of you to know, is that, for the most part, I never modified any of WWF's tables. Instead, if I needed to store additional data related to a user, I created a new table and had one field hold the WWF UserID (or sometimes username if I was lazy and the script I purchased used usernames instead of IDs). In some cases, I added a field so I could create a relationship, but I typically avoided changing any of WWF's tables.
And then once I started learning about INNER and OUTER JOINS, it made it so much easier to integrate. A lot less database queries too.