Editor's note: The following are questions received from listeners of "RealMoney Radio." To send Cramer a question about topics from his radio show, click here. Listen to Cramer's latest radio show by clicking here. When taking a big profit in a stock, do you worry about the taxes? -- Paulie from Connecticut James J. Cramer: One of my investing rules is that it is okay to pay the taxes. If you are paying a lot of taxes on an investment gain, chances are you'll have plenty left over after you give the I.R.S. its cut. Jim, what do you think of small investors dabbling in foreign exchange trading? -- John from Pennsylvania James J. Cramer: If an investor is willing to do the hard work to succeed and has a proper perspective on the risks of any particular investment method, I won't knock it. When it comes to foreign exchange, investors should pay very close attention to how much leverage they are using. It is not unusual to see foreign exchange accounts leveraged up ten times or more. Want more Cramer? Check out Jim's rules and commandments for investing from his latest book by clicking here.