Duplicate Content Question?

Will this create a duplicate content problem?

[Duckman2000]

I have a site which has two pages for many of the content subjects, one for normal viewers and one for "small screen" viewers such as WebTV. A script directs a viewer to the small screen page version if WebTV or other appropriate browers are detected.

Since the content is essentially the same (but reformatted to fit a narrower screen), will this create a duplicate content penalty?

I could delete the small screen page versions as WebTV and others with small screens are a very small percentage these days...

Thanks!