Hi Lucy,

Lucy wrote:
Can someone point me to such a database/spreadsheet online, or to a souce
where I can buy it in electronic format?

The hipparcos & tycho catalogues may be one useful resource
http://astro.estec.esa.nl/Hipparcos/research.html

You might also find the Java tools there helpful.
http://astro.estec.esa.nl/Hipparcos/hipparcos_java.html

Cheers,
~Al