In a pointer from CodingTheWeb.com, there's a new article from Linux Gazette about moving your scripts from ASP to PHP.

In Migration from ASP to PHP, the author uses his experience in moving from ASP under Microsoft IIS with Microsoft SQL Server 2000 to a standard LAMP installation (Linux, Apache, MySQL, and PHP). They made use of a tool, ASP2PHP, to do a lot of the heavy work, converting some of the ASP over to PHP, resulting in updates to session handlers, database connections and queries, and translation of includes. Of course, it is however not perfect. Some ASP codes, for instance, XML-related functions, cannot be translated correctly using ASP2PHP.

Overall, though, this handy tool can make your life much easier when making the move from ASP to PHP, and, as the author states, "If you also find this tool very useful, please do send a thank you email to the author Michael Kohn who has been developing and improving ASP2PHP on a very regular basis..."