PowerBASIC for Windows
PowerBASIC for Windows (a.k.a. PB/Win) is the Windows compiler for PowerBASIC. This is the version that is meant to deal with windows, and there is an add-on (called 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 versions of PowerBASIC.