Some materials are dated but still some good stuff here
EditTraining
Free Ramp Up Training - From Java to .NET: http://msdn.microsoft.com/en-us/rampup/bb421266.aspx
Visual Studio Resources for Java Developers: http://msdn.microsoft.com/en-us/vstudio/aa700835.aspx
Downloadable Workshop - "Migrating J2EE Applications": http://download.microsoft.com/download/3/8/5/3851618D-C4EF-4A8B-8DE9-0C9DB5B533E5/MSDN%20-%20Migrating%20J2EE%20Applications.doc
Downloadable Workshop - Performing Automatic Code Migration": http://download.microsoft.com/download/3/8/5/3851618D-C4EF-4A8B-8DE9-0C9DB5B533E5/MSDN%20-%20Performing%20Automatic%20Code%20Migration.doc
Downloadable Workshop - Java Virtual Machine Guide for Developers : http://download.microsoft.com/download/7/7/5/775af6a5-c376-4c25-a0b9-dfa7f53b62d6/msjvm_dev.pdf
Intertech .NET courses: http://www.intertech.com/Courses/CourseCategory.aspx?CategoryID=53
EditConversion Help/Guidance
Java Language Conversion Assistant (JLCA) 2.0 - http://www.microsoft.com/downloads/details.aspx?FamilyID=46bea47e-d47f-4349-9b4f-904b0a973174&displaylang=en
Java Language Conversion Assistant (JLCA) Wizard: http://msdn.microsoft.com/en-us/library/7tatw8a2(VS.80).aspx
Convert A Java Web Application To ASP.NET Using JLCA: http://msdn.microsoft.com/en-us/magazine/cc163422.aspx
MSDN: Moving Java Applications to .NET: http://msdn.microsoft.com/en-us/library/ms973842.aspx
ADO.NET for the Java Programmer: http://msdn.microsoft.com/en-us/library/aa478977.aspx
Migrating to Visual C# (For Java Devs): http://msdn.microsoft.com/en-us/library/ms228394(VS.80).aspx
Downloadable Whitepaper - Microsoft Java Virtual Machine Transition Guide for IT Professionals: http://download.microsoft.com/download/a/7/f/a7f0d96d-c40a-4ce7-863a-139f5af69305/msjvm_itpro.pdf