Anything is possible but it doesn't mean that it should be done.

>But aside from that, are you saying that it is not possible to have a conditional Build?
>
>>I think it's wrong way to implement whatever you're trying to implement. 8-)
>>>
>>>Here is an example. I have a project that has two class libraries of exact same name (e.g. MYLIB.VCX). Each library reside in a separate folder (MYLIB1 and MYLIB2). Can I use a #DEFINE or something of that sort to set a condition so that when I build an EXE only one of the libraries (matching conditional choice) is included in the EXE file?