Disassemble a Dynamic Link Library with OllyDbg

Is there a option I can choose how to launch the DLL(like when debug开发者_高级运维ging a dll project in visual studio)?

As it seems to me when I drop the DLL into OD,the only option I have is to launch it by LOADDLL.EXE, is that the whole story?

You can't run a DLL by itself, it has to be loaded by some process. OllyDbg provides Loaddll.exe just for that purpose, or you can just debug whatever application is supposed to load it and enable break on new module.