.aspx file can't be found

I've started working with asp.net. I've done my programming and testing on an XP Pro system and it works fine, but when i upload to my server machine, i get a 404 error. What am i supposed to do to enable aspx files?

On my XP machine i installed VS.net which installs the .net framework, but my server already has it. anyway here is what my server is running:

Microsoft Windows Server 2003
IIS 6.0
.NET Framework 1.1

was there some other configuration i had to do to enable asp.net on my 2003 server?

Try creating a virtual directory to the folder where you've copied the files to.

Thanks Mendhak you've always been a big help. I actually found out that when i set up my server as an application server, it installed neither FPSE or ASP.NET, don't know how i did that, since those were the only 2 things on the list. But i've got another problem, when i upload my web application and try to view it, i keep getting errors in the web.config. Something about authentication not going outside the application level. So i'm going to install VS.NET on the server machine and create a little page on it to see if it keeps giving me that error.