[BarbulaM1]

Im very new at this and im just wondering how would I make a exchange like this http://www.simtropolis.com/lots/lots.cfm you can rate everything and it is great. I want to know how to do. If there is a script i could use please post it.

[GO4TF4CE]

You would need to use what we call server side screen which basically means it reads all the script on the server and then just outputs html, this is so no one can then steal your code.

Server side scripting includes the following:

.cfm Cold Fusion - not widely used, so it may be difficult to learn
.asp Active server pages - widely used, but slowly getting phased out.
.aspx asp .net - this is the next generation of scripting
.php - I know really use this, so I can tell you much info about it.

Javascript is client side, so it can be copied by looking at the page source in your browser. Javascript does allow you to have on the fly dynamic content which is why it is used so widely

to do anything fancy you will need a combination of both.

hope this makes some sense

[TwoD]

Off Topic:

.asp Active server pages - widely used, but slowly getting phased out.
.aspx asp .net - this is the next generation of scripting

I'd say ASP will survive for a long time and that it's not at all being phase out.
ASP.Net might be the next generation, but it's not automatically better (or easier to use). Look at www.naltabyte.se to see what I mean.
I don't do much ASP myself but these guys know what they are talking about.