Where do I go to download the WIR Matrix update and where do I go to download those DOSshell and DOSbox programs?

<t> I just recently reinstalled this game. I have tried the Typhoon and Case Blue scenarios, but I can't seem to push the Russians back after the first few turns. I do air interdiction strikes, artillery bombardments, followed by ground assaults. What am I missing? Also, how do you do ground ...