Downloading drivers from the internet (or files in general whatever they may be) is not the best test to calculate your speed. Many things can affect the download speed such as contention on the connection (this may or may not be the case with your package) the server traffic at the location you are downloading from, network congestion anywhere on the internet, any hardware fault (yours/your ISPs/other) or whether any caching is done at your ISP.
The best way to test the speed you can get is by using one of the speedtest sites that were given. If you are unsure about the result you can try several of these sites and try to work out an average - but if they are all giving similar results you probably have a fairly accurate idea of your speed.
Try
http://speedtest.net/ and initially try to use the server that is in Kigali if it is available. It was listed when I checked the site when I previously posted but I can't see it on there now. The site will reccomend the best server for you to try when you connect, but there is nothing stopping you from running several tests from different servers listed on that site.
You can also compare any results from speedtest.net with some of the other options that have been suggested in this thread such as
http://www.broadbandspeedchecker.co.uk/ or
http://us.mcafee.com/root/speedometer/default.aspSome other options that you could try are:
http://www.thinkbroadband.com/speedtest.htmlhttp://www.speakeasy.net/speedtest/http://www.cnet.co.uk/misc/speedtest/http://www.bandwidthplace.com/http://www.internetfrog.com/mypc/speedtest/http://www.dslreports.com/stestThere should be more options there than are necessary to get a very good idea of your actually connection speed.
There are software tools available where internet connection speed can be monitored, but I don't use that method so couldn't reccomend one in particular.
Or finally if you set up a smoothwall server, that has some really good bandwidth monitoring tools built in and they are very easy to use. That can even tell you (in real time) how much bandwidth is being used by each client on your network. There are other similar tools available but as I have not used them I can't reccomend any others - but I was very impressed by the features in smoothwall 3 and there are certainly some features (such as QoS) that I would definately want to have available to me if I were setting up a system like you have.
The first (and quickest and easiest) step should be to try out the speedtest sites listed and see what results you get.
Good luck with it and let us know how you get on.