IGI 2 Covert Strike + Hitman Silent Assassin help

[Ultiweap]

Hi everyone,

I'm using Windows Vista Home Premium on my PC and for that two games I can't play them. For IGI 2 Covert Strike I can't open the setup and for Hitman I can't play it. When i tried to play Hitman it gave me an error I tried to change Compatibility Mode for both game but still same problem.

What can be done for IGI 2 setup to start working and Hitman to work?

Thanks in advance for any help
amagnien