regsvr32 man page
regsvr32 — Wine DLL Registration Server
regsvr32 [/u] [/s] [/n] [/i[:cmdline]] dllname
regsvr32 is the Wine dll registration server, designed to be compatible with its Microsoft Windows counterpart. By default, it will register the given dll.
Unregister the specified dll.
Run regsvr32 silently (will not show any GUI dialogs).
Call DllInstall passing it an optional cmdline. When used with /u calls DllUninstall.
Do not call DllRegisterServer; this option must be used with /i.
Bugs can be reported on the Wine bug tracker.
regsvr32 is part of the Wine distribution, which is available through WineHQ, the Wine development headquarters.
Wine documentation and support.