HTC Hero :: Why Can't Find Doom On Market?

I recently got the HTC G2 Touch and sometimes it is a great phone and sometimes it's the most expensive brick i've ever bought. I was wondering if anyone could answer a couple of questions,

1. I'm surprised the phone doesn't have a music equalizer. Are there any apps that do this?

2. Toon Warz lags on my phone quite alot. Is there anything I can do to speed it up?

3. When I play a song there is a stutter at the beginning of each song, is there any way to stop this? And when I press pause it doesn't pause straight away, or when using the buttons on the headphones.

4. Why can't I find Doom on the market? I've searched literally everything!

5. If I buy a game, does it just get charged onto my phone bill?

6. I know that you can uninstall a game within 24 hours and you won't be charged, but couldn't you just uninstall and reinstall an app every 24 hours and not get charged?

I know that this isn't the G2 Touch part of the forum but this area gets more views and the phones are practically the same!