Hello all! I have a question that I hope someone has an answer for. My wife and I are looking at getting a few of these Optimus V phones for our kids for their cheap service plans and unlimited data plans. With this we were planning to use something similar to the GrooVe IP app to make/receive calls over our PBX (using sip) or even google voice since calls are free for this year. The only problem is I know that my kids will not remember to go to the groove app to place calls and will just hit the "talk" button and dial a number. Is there a way on this phone that will replace the normal phone app with another one like Groove IP or similar? Basically just changing what app the button opens I guess. I am a long time blackberry user and am new to the android stuff but can probably figure out the basics. If this is only possible with rooting the device I am ok with that also. Thanks in advance for any and all guidance.