I have a solution with quite a lot of custom code. What would be the best way of setting up my site on the IIS, so I can do clean deploys (maybe even automated deployment) ? I have considered setting up the umbraco, umbraco_client, members/images and media-folders as virtual directories, so I can just delete everything on the server and deploy my new code without deleting the umbraco-specific stuff (eg. maintenance-modules such as Housekeeper, Examine GUI etc), media and member-images. 

Are there any best practices / good ideas on how to do this?

thanks

Thomas