Symbols

Hello All:

I'm looking for radio and checkbox (selected/unselected) symbols. Does
anyone know where I can find such symbols? I tried looking up at 
www.unicode.org but to no luck. I tried creating small images which 
depict as HTML controls -- but they look ugly when viewing with 
acrobat reader (with different page magnification levels)

Can someone help me here?

Regards,
Rohit