Well, after making an adventure to the grocery store after class, I've found that only a few grocery stores carry malto or dextrose as individual products. I guess I was lucky when I lived in Sioux Falls, SD, they did.
So, I just picked up some regular sugar, since it's a dextrose/malto combo (but one molecule, instead of individual, thus slowing digestion slightly).
But, it did occur to me, that you can buy maltodextrin at brewery shops. Sounds crazy, but I remember doing it before. Hopefully you'll be able to find something somewhere!
As for the latest Gatoraide powder question, I'm unaware of the exact proportions of sucrose to fructose, since I've never been a big fan of Gatoraide (because of the fructose).
But, I have seen our own JB recommend it, and hopefully more T-men will know the more than me.
Just going on the small info I have on the Gatoraide and the basic fact that fructose is not ideal in any way for post workout, I'd suggest shying away from it, in favor of either regular sucrose (table sugar) or individual malto/dextrose.
Hope this is making some sense, I just finished taking an exam, so my brain is a little out of it.