Candi,
Cool! You're coming to my area of the world. I live in Edmonton, a 4 hour drive east of Jasper. We try to get out to the parks once a season (since having the kids, though, we're lucky to make it once a year). One suggestion about the cost: if you're going to be spending a lot of time in the parks, it might be better to buy an annual parks pass that will get you into any of Canada's national parks. They're usually around $75, but the daily charge for being in the parks is some where around $25 a day, IIRC. Just an idea.
My favourite thing to do in the parks is just to drive around a lot, take pictures, hike a lot, (ski in the winter!!!! - my most favourite thing to do there!), and generally relax and soak in the serenity. Oh, and eat. Love to eat.
LOL! I just skimmed the post you addressed to Shelley, and she suggested I'd be more help to you than I probably was with this post. I really have to just agree with the previous posters. They mentioned all the hot spots for a summer trip. If you were going in the winter I'd have other suggestions. I know my brother and SIL did some horse back riding in the mountains when they visited. I've never looked at that, though, so can't recommend a particular business.
Oh! The train!! Any kind of CPRail train ride through the mountains would be amazing.
As you make your way through the parks, check out all of the CP hotels ("Jasper Park Lodge", "Banff Springs Hotel", and there's another one in Lake Louise). They also have fine dining in them. Very nice.
There are a few spots in the parks with natural hot springs. Bring your bathing suit and enjoy the soak. The hot springs are marked on park maps..
And then there are the cable car rides in Jasper and Banff. Those are really nice. Take you to the top of a mountain with a great view.
If I think of anything else I'll get back to you.
Have a great trip!
Sandra