Council to develop web applications.

[SVL_ALFX]

Hallo to all,
I need for a council to develop web applications. I am a vb6 developper, and I need to develope a web application. I would like to develop in Visual Studio .NET. From researches done on the Internet I saw that there is a 2012 version of visual studio ( full and express ). For you, if I use express version of Visual Studio, is it a complete functionality development environment for web ? Or is it better to use Visual Studio 2012 ? From researches done on the Internet I saw that Visual Studio 2012 Italian CD Price is about 600 euros, and Visual Studio Express 2012 for Web is free. Do you confirm me this ? I'll ber new of .NET. I need your suggestion if I'm making the right choice. I have Visual Studio 2005, but I have compatibility problems with windows 7 professional 64 bit. Visual Studio 2005 and updates ( VS80sp1-KB932232-X86-ENU and VS80sp1-KB926601-X86-ENU ) have compatibility problems ( I have installed italian version of Visual Studio 2005 ). I'm trying now with the windows xp the emulator.
In attachments error compatibility messages of windows 7 professional 64 bit:
1. Error launching Visual Studio 2005: ErroreVB2005.gif
2. Error updates: ErroreUpdates.gif

Thank you for you replies.