More information may be of help. Anything you think may be relevant.
-Are there and error messages you can quote ?
-Have you installed all the 'important' Windows Updates (there are several game related
updates in the mix).
Which version of Win 7, 32 or 64 bit ?
- The game was released in '99 and apparently uses Direct X so it should run on Win 7
(with some coaxing).
Assuming you have 64bit Win7, you would either have to find a new installer from a
DELTA FORCE 2 fan site , install and run the game via a Virtual Machine, or install the game on a
machine with 32 bit Win7 and copy the game from that machine to yours.
If the game uses Hardware T&L lighting the game may also need a fix from a fan site to
allow for more modern graphics processing to work with the game.
This should not stop the game from installing, but would cause problems running the game.
.