Need help figuring out my possible BLUETOOTH

OK - I KNOW that this will sound really silly, but I do not know if I have bluetooth on my iMac g4. I bought it THINKING it did (bought it slightly used) and now cannot find out how to enable the capability if it IS on my machine. I went to Syst Pref>Help and it ran me through some things, but i still could not discover whether or not I have bluetooth or not.

I know, you folks are probably thinking that I am TOTALLY nuts, but that is beside the point at hand. Please help me as I am new to not only THIS mac, but Macs in general.

Thank you-

"Blueless" (get it? not Clueless... - my sorry attempt at humor.)

Sproles

Click on the apple in the top left corner, click "about this mac," click "more info" and then under hardware, check and see if there is anything for Bluetooth.

or,

System Preferences, Bluetooth.

This is assuming you are running OS X and not OS 9 or earlier.