2 questions I need help with please!

1-how do I format my flashcard?

2-can my curve play music thru my car stero..if so how?

1) Options > Media Card > menu button > Format Card

2) Depends on your car stereo and what type of inputs you have available.
You'd need a cable going from your Curve's headphone jack to the car stereo's audio input. Not exactly the best setup, but it would probably work.

2) you can use FM modulator and listen your media files in BB by FM radio if your car stereo does not have appropriate inputs.

Wirelessly posted (BlackBerry8300/4.2.2 Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/102)

it really would be cool if someone made a dock for the bb. Much like the xm roadie if you're familiar with it.

Anyway, another option is if u have a cassette player u can use a cassette adapter.

Welcome to BBF!