It has taken awhile, but Nokia’s response to Apple’s App Store is finally open for business. After being teased a few weeks ago, Nokia has announced that its Ovi Store is now live in select markets, with AT&T looking to join in here in the United States later this year. Nokia customers can surf over to store.ovi.com on their device browser in order to begin downloading, personalizing and loading their phones up with applications, games, videos, podcasts, productivity tools, web and location-based services,