1 hr movie on a laptop?

Pulling my hair out!
I have an uncompressed 161 gig (1 hour) QT Movie (NTSC Size) created in FCX
that needs to be playable off a common windows laptop.

When I test a simple 500mg movie (sor3) on the laptop it barely runs, playing with QT Player.

Is there anything I can do to ensure when I give this to my client (gotta make multiple copies)
it will play well?

[I originally made it into a DVD, but for some reason the projector they are using will not display the movie
but it worked great on the laptop screen)

Thanks for any thoughts

Brian