PS. If there is a known solution it tells you. After sending the report the recieving computer analyses it, and if it knows what caused it sends back a web page link decribing how to fix which you see in a dialog after the sending dialog is finished (if you don't see anything then it doesn't know what caused it).
Otherwise it's used to generate statistical data on both the causes of the problem (eg, everyone with this problem has same brand sound card) and which ones MS will allocate resources to fix. Resource allocation is based on severity of problem (blue screens are more important than notepad crashing) and the number of people affected.