You might try a PDA with http://www.h2g2.com/ ....

>>Yep, it's Trall. I had to consultant the original "Hitchhiker Guide..." Took a lot of doing. Fortunately, the publishing company in the Ursa Minor area has a web site. Unfortunately, I had to re-align the radio-telescope, so it took some doing as I don't have the technology nor several large building to house it in.:-)
>>
>>BTW, it's Vogons, I was wrong.
>
>LOL! You know, the H-Guide was SF back when the book was written, but not so far fetched today. A PDA with the appropriate data could do a nice job of approximating it...
>
>Michelle