and deleted the corrupted files. After restarting my system, Windows 98 could only be restarted in the security mode!!! Now I was forced to reinstall Windows. I combined this with spending my money on a new IBM 40 GB hard disk (just around $100) 
. Finally, I decided to install Windows ME on my system (two of my friend are using it without any problems and it boots much faster than Windows 98) After two days of reinstallation (It took me more than 2 hours to install Office 2000 ! !) and copying of my data I was able to install SPWaW yesterdaye evening (It was the first game to be installed on the new drive). Anxiously, I started the game and was not able to turn of the computer for over six hours (and 3 Stalingrad campaign scenarios)! Completely exhausted, I went to bed at 4 a.m ! 
Thank you, David, thank you Larry and thank you to everybody trying to help me!!!!!!!!!!!!
And again, I'm forced to admit that you can not run Windows on your computer for more than a year without any problems.