What speed is your broadband connection supposed to be and how are you checking it?
<<< if I use the ethernet connection the speed realy flies (6.5.Mbps)is this normal >>>
If connecting by ethernet, the Local Area Connection's Properties would normally show the speed of the LAN connection between PC and router(?), which would be 100Mbps. This, of course, isn't related to your broadband connection speed. Hence, what speed are you measuring and how?