Mesa 2, the spreadsheet from Sundial Systems, has the ability to utilize "outside" values as part of its calculations. For those who are interested, a stock quote example for Mesa 2's real-time feed is now on the Sundial web site. There are a couple of smaller feed examples there as well.
http://www.sundialsystems.com/mesa/mesafeed.html
Sundial PR
http://www.sundialsystems.com
Source: OS2VOICE