Which way should I go

Dear All,
I currently have a large system built using asp's and a backgroung java program (triggered using global.asa via the IIS mechanism). All the hard work is done in the java program and then displayed to the users using the asps.
I want to get away from the Microsoft tie in and need to look at a new method. I don't want to lose the Java program and thus I need something to replace the asp's and also something that can create an instance of a Java program, keep a track of the session etc.
Looked at JSP, also a little of PHP but am curently quite overwhelmed. Would like to hear any recommendations from anyone who has any ideas and experience that they wish to share.
Thans in advance.
Richard

Read the servlet tutorials, servlets and JSP are what you need. Both aren't difficult and mostly the same, but for basic understand, servlets are better because they look less cluttered and contain "real" code. JSP is only for the data rpesentation.
The tutorials are good enough, but maybe a book like Core Servlets and JSP (I think by now available online for free) might help.

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