myspace is coded with the suck.NET language.
if youre looking for dynamic webpages or interactivity, PHP/MySQL is free, and its fantastic.
if you like to spend money, you can go ASP.NET, but its not as flexible as PHP. you can only run it on M$ Servers.
if you are interested in checking out PHP/MySQL you can download a prepackaged server from
http://www.wampserver.com/en/! also, for any type of help with PHP, check out
phpfreaks.com,
codewalkers.com, and
w3schools.com