PostNuke and PHPNuke are okay. They're sorta overused now to the point of where it's easy to distinguish them. ASP.NET has a nice ASP one that tekmaven uses on his site. Basically you're looking for a CMS (content management system). They're available in PHP, ASP, etc ... you just have to have support for a web dev language and database on the server's end (e.g. MySQL, SQL Server, etc.).
cscgal
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