Good trainer IM course videos?

I typically ride outside and never saw myself getting a trainer, but with all the slush and snow in NYC, I broke down and got a cycleops fluid 2 trainer. I did a few sessions and must say it is great. It's so tough to keep cycling at a constant wattage. I used that free video and thought it was fun, but seems it would be great to actually use bike courses from IMs since I am training for IM Canada.

Now I know this isn't a computrainer, but can you use these
http://www..com/2009/06/ironman_canada_interactive_real_course_video_released.htm
videos as something to spin to? I guess could I just pop it into my DVD player and spin with it on and just try to vary my wattage to mimic the course?

If I can't can someone recommend a company that would make the non-interactive videos of real IM courses? I prefer IMC since I will actually be doing that this August.

Otherwise a trainer is great and I am so glad I don't have to miss my bike sessions due to inclement weather and gym bikes suck!