We need our dish moved and we would like 2 more recievers

When we had our Directv set up we were really busy. After everything was set up, we realised that our dish was put on our house very low.We would like to build a porch but we can't because the dish is in the way Do we need to call Directv to have it raised or can we do it ourselves? Will we be charged?

Also, we would like to put a reciever in each of our kids' rooms. We are tired of fighting over the family room TV. We don't want DVRs just a simple reciver. How much would instilation, etc. cost?

We would like to have the recievers and the dish raised on the same day...

Thank you in advance!