Compiler/Linker differences in Visual Studio conversion

[stabilize]

Hi, First post. I apologise if I break any rules/post in wrong section.

I have a project that is essentially a hot pot of C/asm (naked functions etc). The code gets injected into another EXE. It works fine when compiled in Visual C++ 6 but when compiled in Visual Studio 2008 it compiles fine but falls over in use.

Are there certain settings I need to look out for? I have optimization disabled and as far as I can tell the command line options for compiler/linker are the same (given the differences).

I have opened both builds in IDA and the 2008 build has more import and offset jumps are in different places.

Thanks

[tath]

What errors/exceptions does it give away? Or it simply doesn't work? Debug and see where it crashes.