[Wine] about overriding dlls

[fcmartins]

I am checking an old bug http://bugs.winehq.org/show_bug.cgi?id=9637 which happens to affect several games. Before arriving to the bug in question, one has to workaround another bug relate to shdocvw.dll.

It is recommended to override a set of libraries which I believe should be put in system32. However, at least some of the dlls are already there. Are these the wine builtins or rather proxies as mentioned here: http://winehq.org/site/docs/wineusr-guide/config-wine-main.

Could someone clear up where are the wine builtin dlls and where should I put the overrides in such a way that I can choose between both with winecfg?