The Dink Network

Another way, though you will lose some of the original graphics (but you can choose the ones you don't want) is to copy a certain part of the original games BMPs into your graphics folder (e.g Graphics/Dink/walk) and copy in the new graphics you want to replace them with.

This means renaming all the BMPs to be the same as the original graphics (which doesn't take very long once you get going), but is an OK'ish alternative if you are scared of the ini file (like me!!).