Simple way to display some numbers

I have both a visual basic application,  and a web site that need to display a few small numbers.

ie:

Value 1  = 1000
Value 2 = 500
Value 3 = 200

These values changes every few hours.  As of right now,  the people who update these values must update 2 sperate forms... one for the web site, and one for the VB program.  (The VB program is displayed on an LCD screen,  where as the web site is displayed to browsers on the Internet).

Because I don't have the proper pre-requists on my web server,  nor do I have any internal servers,  I cannot use SQL.

And because these values are so small, and do not need to be stored, I was hoping I could use some kind of Flat File solution, such as XML,  or maybe even just a text file.

Is a standard HTML file capable of reading from and writing to XML?  Or just to a standard HTML file?

Could a VB program also ...