John,
If it's for company employees only, why not host it on a webserver in your LAN. Look at enabling IIS, or Peer Web Server, from Windows NT up, and there should also be a webserver for 98.
Have a look at imatix.xom, or Xitami.com for a nice lightweight webserver
HTH
--Paul
For my final year project in '92 I used a product called LabWindows, which was basically a data acquisition card, which would store the values and allow you to process them 'realtime' using an interpreted C called QuickC
They're owned by National Instruments now (not sure about then, it's so...