Man Viper, you better stop talking about my 48G like that. I've never played around with any TI's above 86 much, but I'd put my HP up against them, especially for engineering stuff. And engineering profs know the 48G, not the 92.
I've seen instructions for making a Graphlink, and they didn't look like too much fun(as opposed to my 48G's serial cable that I made out of a mouse and a crayon)
Don't get me wrong, it's a powerful calculator. I have one. But the 92 is MUCH better for what I needed (Calculus, statics, etc). And most of the teachers had long since abandoned their 48G's when the 92 came out.
I tried using my roommate's HP when I was a freshman. We switched my 92 and his HP for a week. I just couldn't get used to the reverse polish notation. It just wasn't natural for me.
I like the 92. I can enter in an equation just like I see it on paper and have it pop out an answer that makes sense to me. I love the way it handles complex numbers, integrals, and differentials. I've always hated doing that crap by hand.
I was finishing HS right as the 92 came out. I guess that's why they didn't have any rules on it. I know that QWERTY keyboards weren't allowed on the SATs. I didn't know that they were banned in some high schools as well.