subsitution of msvcrtd.dll by msvcrt.dll by patching the application, how to

Hi,

I have ‘inherited’ the xxx.dll library for an in house developed product. Unfortunately the library has a dependency msvcrtd.dll. As I do not want to ship the msvcrtd.dll with this product and as for some technical reasons I cannot easily rebuild the xxx.dll, I wondered whether it would be easy to substitute the msvcrtd.dll by the msvcrt.dll

I checked with the dependency walker for entries used by xxx.dll that are not available in the normal msvcrt.dll. I found only two such entries: _malloc_dbg and _free_dbg. I would guess that these entries could possibly be substitutable by the maloc and free entries

Has anybody done such a thing before

Are there patching tools for making this type of modifications to the existing xxx.dll

I use this opportunity to express my regrets that the normal and the debug versions are not made fully interchangeable; I think that this must have been possible, without any performance loss. Maybe this is/will be possible for future releases (a suggestion to the msvs developers).

Thanks

Michel Jonker