Well nevermind ... I put up this post prematurely. After some thinking about the problem I figured it out. Here it is:

#include <stdio.h>
int main( void )
{
int row;
int col;
int num;

printf("\n");
printf( "Please Enter a Number Between 1 and 20: " );
scanf( "%d", &num );

printf( "\n" );

for(row = 0; row < num; row++)
{
for(col = 0; col < num; col++)
{
printf("*");
}
printf("\n");
}

printf("\n");

for(col = 0; col < num; col++)
{
printf("*");
}

printf("\n");

for(row = 0; row < (num - 2); row++)
{
printf("*");

for(col = 2; col <= num; col++)
{
if (col == num)
printf("*");
else
printf(" ");
}
printf("\n");
}

for(col = 0; col < num; col++)
{
printf("*");
}

printf("\n");

return 0;
}