I am upgrading my machine to Windows 7 but I would still be supporting VS2002 (.net 1.0), VS2003 (.net 1.1) , and VB6 applications.
Is it possible to load these VS and VB6 applications, build, compile, edit code, and support this source code in Windows 7?
Best way to answer your question is to do an experiment. You can setup a VirtualBox whose guest OS is Windows 7, then put whatever programs inside and test out. If they run fine, it’s okay to do the real upgrades.