Right so here is my issue. I have a very large house (4 floors). My router is on the top floor where the main phone line is, it will be connected via ethernet to my soon to be bought iMac. My MBP and the wife's Vaio are normally used in the living room on the first floor. They are connected wirelessly and work fine. I also have a PS3 and play quite a lot online but have to connect wirelessly. average signal strength is 45-50%. My average dowload speed is 16-18 mbps There are also stereos on all floors. Question is this; I would like to increase the signal strength on my PS3 and play music from the iMac across all floors, which, if either would I need to do theses things? is the extreme a router? Please be gentle as I am a mac newbie and am still learning. Thanks in advance for any help.