How do I downsave an Illustrator file from CS5 to CS4?

[mereinsanity]

I just bought Cs5 for home and I'm running off Cs4 at school, is there any way to export or save as a different extention so that I can open a Cs5 Illustrator file in Cs4?

Thanks,
Bri

[Blaspheemer]

Also, Larry the Cable guy, the creator version changes when saved as 8.0.

[Larry G. Schneider]

But AI 8 is a totallly different animal. But you are right, in that is seems as though AI will not list version 10 in the header. I tried several different ways and they all come out with AI11EPS as the type.

Looks like iStockphoto may have to come into the 21st century at some time.

And I'm not Larry the Cable Guy.