Okay Darlin Jay, help you out with what I can....

1. Yes, listen away, and there is also a text box so that you can communicate in chat without a mic.

2. Walmart mics are fine. You shouldn't have to spend more than $10 on one, and it's more than adequate.

3-4. Your system aounds fine, and from what I've experienced myself, it's not so much the crashing as it is getting booted out from time to time. Just be patient. Some days you are the pigeon, some days you are the statue.

Good luck, and can't wait to hear you too. ~Elle