Well, I just use adb to modify the system programs, so I'm not too used to Root Explorer. But the name of the News and Weather apk is GenieWidget.apk I believe. So if you use Root Explorer, go to /system/app and find GenieWidget.apk, then just rename it GenieWidget.apk.bak. It will no longer show up in your program drawer, but if you ever want it back, it's not deleted. All you would have to do to get it back is to change the name back to GenieWidget.apk. If you want adb instructions, it's pretty easy to do as well, just pm me