3.5kbps.flashget

Hi to all! I am using 56 Kbps Modem.The file transfer rate is very slow. I've tried nearly everything.Internet boosters etc.don't work Ondinary download speed is 1.5Kbps(w/o using any software) With Free Download Manager,it reaches to 3.5Kbps.Flashget v1.4 gives the speed of 5.5 Kbps.I want to...