I have written a priming sugar calculator (link in my sig) and will agree that table sugar is perfectly fine. Rule of thumb is to use about 90% of the amount of table sugar as compared to corn sugar (or check a calculator to be exact).
I personally never buy corn sugar anymore. You can get five pounds of table sugar for a similar price as five ounces of corn sugar from the LHBS, and able sugar - like corn sugar - is 100% fermentable. This means that there is zero flavor contribution; you get nothing but CO2 and alcohol from it.