If your headphones arent working Google this:
//code.google.com/p/toggleheadset/ download the widget and install

I got a noisehush headset and works great for voice and stereo. My old HTC headset I got with the tmo wing is on its dying day.

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xda + android + htc = :)

I have a pair of headphones with a button and mic in the head set. I press the button to start/stop music as well as answer/hangup calls

I have the Zagg buds and they work great with the hero. I can press the answer button the button on the volume adjuster that are on the buds and it works like a champ.

Great headphones!

Originally Posted by Kcarpenter

If I recall correctly, and IPhones headset lets us control volume and music threw it - I assume calls would be answered in the same manner.

I bought a pair of Sony head phones for the Iphone to use on my HTC Hero thinking that they would work because it had volume control and built in microphone but all their good for is listening to music...

I use Thermaltake eSports Isurus headphones. They're in-ear buds with a mic on the line. The use a single 3.5mm TRRS plug to connect to phones, and have a TRRS to TRS headphones + microphone splitter for plugging into a computer. They work great with my HTC Hero.

They have an on-mic button, but I haven't played with that to see if it'll auto-answer if I push it. I'm more the 'plug the headset in after i get a call' kinda guy.

yes