Investing in Penny Stocks?

I'm trying to practice investing with penny stocks. I'm looking for a investment profile company that has NO MINIMUM deposit. Ameritrade, scotrade, fxtrade, etc asks for at least 500 dollars in deposit. I have more like 20 dollars in my paypal to spare so are there any companies that allows 0 dollars in... show more I'm trying to practice investing with penny stocks. I'm looking for a investment profile company that has NO MINIMUM deposit. Ameritrade, scotrade, fxtrade, etc asks for at least 500 dollars in deposit. I have more like 20 dollars in my paypal to spare so are there any companies that allows 0 dollars in deposit?
Update: @Wanda, "own capital"? Just wondering. What do you mean by that. If not my own money, then who's? I doubt Bill Gates is going to let me invest on his money.
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