Where to enter income from outside Canada sources on Income Tax Form.?

I usually do my own taxes because it's so easy. Because I'm on ODSP I have no taxable income. However, this time I have one thing extra, that is taxable, and I don't know where it goes.Last year I was given a small amount of stock from an American Company. Just enough for a Withholding Tax of $20. and just enough to throw me off. Is there a special form that needs to be filled out to accompany the rest of my tax forms? Or else, where on the tax form does the: Gross Dividend, Federal Income Tax Withheld and Net Dividend amounts get entered? Can anyone please ist?