How to force a program to run in READ-ONLY mode?

["Simon Borduas" <sborduas () hypertec ca>]

Hi,

I'm curious, is there a simple way or a "shell utility" to force a  
program (under MS-Windows 2000) to run in read only?

I want to make sure the program doesn't write anything anyware (Just 
load and run in memory)

Thanks.