Can I call a .NET 1.1 assembly from a .NET 2.0 assembly or vise versa?

Intra-thread lock
Could not create Microsoft.VisualBasic.Logging.FileLogTraceListener, Microsoft.VisualBasic, Version=
Single or multiple assemblies for big apps and code reuse?
Microsoft .NET Framework 2.0 Configuration
Windows service not starting at boot time