I recently acquired a Kindle Keyboard 3G, which turns out to be quite a versatile device in addition to its main purpose of reading books. It has an "experimental" Web browser which, while somewhat limited, proviides at least two ways of getting pass predictions over the Intermet.
AMSAT's home page, www.amsat.org, is incompatible with the Kindle browser, but the Kindle will go directly to the pass prediction page, www.amsat..org/amsat-new/tools/predict. In the Browser menu, select Enter URL and type that address in. From that point on, the AMSAT pass predictor will work normally, as it does on a "real" PC.
If you need a satellite that AMSAT's pass predictor doesn't cover, www.heavens-above.com will work on the Kindle too.
73 Ray W2RS