speed tests are not allways correct
get
http://www.ie7pro.com install that at the bottom there be an new blue icon in internet explorer showing it is installed the ie7pro has an ad blocker (recommend turn that off right click blue e untick it) and an very small download manager that splits the file into 8 parts to download from the server
download file like
Nvidia driver or
XP SP3 download as thay are quite big and can max your download out
make sure you have no p2p apps running that are uploading (Xfire, DNA Hidden and others) when doing the above on any pc, as if you upload your download will suffer if you uploading to fast
you should be able get 2-2.4MB/s download speed in that download manager as long as the web sites can provide the speed (one of them alone is maxing my 50mb line out at 6.4MB/s at the time of posting)