I guess you have ADSL broadband. ADSL is asymmetric digital subscriber line. It is asymmetric as the download bandwidth is higher than the upload bandwidth. Typically, a 512 KB download will have a 128 KB upload ie about a quater of the bandwidth. You can buy symmetric digital subscriber lines but they are more expensive. Dial-up and cable internet connections are also usually asymmetric. Obviously, if you upgrade your download bandwidth it will upgrade your upload bandwidth.