Overriding malloc/free functions

Hi,
Actually this question is not strictly .NET but relating to the .NET environment.
I have a library that efficiently implements heap management.
I want to use this library in my application which i have built in the .NET environment.

The problem is the solution file has a set of 12 projects in it.
Is there any simple way to make sure that all of the projects will use my library calls for malloc/free calls and not the system implemented ones.

Also is there any way to verify the same after compilation?

Thanks