DSL Speed Test

All these tools are freeware:
Web Check me Now Tool: http://www.speedtest.net/results.php
Alternate Web Check Me Now Tool: http://www.zdnet.com.au/broadband/speedtest.htm
Historically take tests and record them online: http://www.dslreports.com/speedtest
If you want to run a tool that will make schedule tests, and report results to you, then this tool is the one for you: http://www.broadbandspeedtest.net/
Network Speed Test Tool Freeware: http://www.analogx.com/contents/download/Network/nsl/Freeware.htm
Cheers, josh

DSL Line Speed Meter

Measure your DSL line speed, with this very hand application:
http://www.tcpiq.com/tcpIQ/LineSpeed/Default.aspx
You will need to download a program and create an entry. For good results, try installing it on more than one of your computers, to see if the results vary.