Dice-roll to coin flip conversion

I want to convert a long list of single six-sided dice rolls to 
random binary (as if I had flipped a coin instread of rolling 
a dice).  I can think of a bunch of ways to do this that throw 
away information (1/2/3 = 0, 4/5/6 =1) but I want to not lose 
any bits.

The tools I have available to me are GW-Basic and a good 
scientific calculator.

BTW, is this the same thing as converting base 6 to base 2 (binary)?