I'll tell you a fast way to find a few symbols to use that are in your own computer.
I'm not sure what type of windows you've got, but let's assume that you've got Windows 7, and it doesn't make thaaat much difference to other windows anyway.
Press the "Windows start" button, and either type "Character map" on the search bar, or go to Programs --> Accessories ---> System Tools and click it from there.
You will find all the characters a font can have, such as this one: ♥
Other ones have more.