C# Help: Text-Typing Animation

I wish to make the console animate typing of a string kind of like the credits for Portal (for those who HAVEN'T seen the ending of portal, watch this video to understand what i'm asking for: http://www.youtube.com/watch?v=Y6ljFaKRTrI)

How should I approach this?

#include "void.h"
mainstart;for(int i=0;i<strlen(argv[1]);i++){printf("%c",argv[1][i]);usleep(300000);};mainend;
C:\Program Files\DigitalMarsC\bin\code>main "This is a test"
This is a test
C:\Program Files\DigitalMarsC\bin\code>



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