PowerBASIC for Windows
PowerBASIC for Windows (a.k.a. PB/Win) is a version of PowerBASIC. Somewhat obviously, this is the Windows compiler for PowerBASIC. This is the version that can (easily) deal with windows, and there is an add-on (PowerBASIC Forms) that can make this task easier.
PowerBASIC for Windows is an implementation of PowerBASIC.
Other implementations of PowerBASIC.
It's important to note that there are some fairly major language differences between the DOS and Windows version of PowerBASIC.