InfoPath Dev

I'm new to using managed Code in InfoPath 2007 and have some questions:

• Where can I find API references for the C#  and .NET languages?
• Managed code usually needs to be compiled, is this the case here?
• How is it stored, is it stored in the XSN file or seperately?

I have Visual Studio 2005 installed on the same machine, the .NET framework SDK and Microsoft Visual Studio 2005 Tools for the 2007 Microsoft Office System.

Turns out I can answer my own questions now so for anyone else who might be wondering the same thing:

1. Class Library Reference for Managed Code Form Templates http://msdn.microsoft.com/en-us/library/aa948293.aspx
2. Looks like it's compiled when the form is published
3. It is stored in a seperate file the VSTA default location is C:\Documents and Settings\you\My Documents\Microsoft Visual Studio Tools for Applications\Projects and can be changed under Tools>Options