Here are a few screenshots of an antivirus program I wrote with two of my friends a long long time ago when we were 2nd year (sophomore) undergraduate students at BUET. It was written to run in the textmode (without any real graphics) under MS DOS using a palette of 16 colors. It cleaned only one specific, brand-new virus but nonetheless saw widespread use in Bangladesh, since other antivirus programs had not yet added that virus to their databases.