You will need to use PHP and MySQL. Firstly create a new MySQL database which would be pretty simple with two fields ("name", "score"). Now go to flash, whenever you want the score to be sent just knock up a new loadVars with the information for example...
Then you send it and load the result with the sendAndLoad function (read help), basicly you send the loadVars to the url where your PHP file is which returns if it is successfully loaded or not blah blah...
var myVars = new loadVars();
myVars.score = gameScore;
myVars.name = name.text;
Then read up on some PHP, (i would explain but im tired) and set up a few functions that get the variables sent and then save them into your MySQL database and then process them into XML which can be easily turned into a table.
Well i would love to write a whole tutorial but its late and i have work tommoz, mabye tommorow. At least you understand the basics!