> I want to make use of OS/2, Windoze, and DOS in my programming.
> Assembly insertion in my programs is also a must.

Why? Even if your compiler supports insertion of assembly, try to keep
an open mind and re-evaluate if you really need assembly. With modern
operating systems such as OS/2, it is better to use a high level
language and write to the API.

The many reasons to avoid assembly language under a modern OS boil down
various aspects of quality, reliability, re-use, and portability. Bad
habits common under MSDOS programming should be abandoned. Low-level
"tricks" bypassing the OS services should be avoided. 

Modern compilers do a very good job of optimization so assembly
language may even yield slower code. This is particularly true for
the new pipelined and superscaler processors where instruction ordering
and alignment for optimal dispatch can be particularly hairy. 

--- Maximus/2 3.01