It does help to submit a DXDiag though, and it only takes a few moments to do so. It's always possible that the developers can optimize the game to work even better on your specific hardware if it's not working as intended. However, there's no way to tell what the game runs like until you can actually download and play it. Who knows, maybe you'll be able to play it as is.
The official requirements are listed on the Ubisoft Support site here:
www.ghostrecononlinewiki.com has more current information and a cited source on the following page: http://www.ghostrecononlinewiki.com/...m_requirements
Ghost Recon Wiki - http://www.ghostrecononlinewiki.com
No. For the simple reason that the game is set up to use IE inside the game itself. When you load certin assets from the dashboard menu, such as Help and Trouble Ticketing, it automatically uses a kiosk version of IE. Adding more browsers would only disturb the Ghost In The Machine, and open a Pandora's box of bugs. Windows machines all have IE, but not necesarily other browsers.
Death is your friend
What you might kill, I will eat....
The reason links are opened with Internet Explorer is due to the heavy integration the browser has with Visual Studio/Visual C++. Programs made with those often only open links in IE by default, even if it's not your default browser.
I hope they fix this in time however.