Hi,
Yes, you can map a drive to a Document Library "Net Use Z: Http://instranet.contoso.com/documents" and use any FTP Application to Copy files to your WebServer.
There is alsoSPFileZilla available on Codeplex that turns your SharePoint SErver into an FTP Server...
http://spfilezilla.codeplex.com/
Inspired by FileZilla, the fantastic free FTP client, SPFileZilla allows you to navigate and manage SharePoint as if it were an FTP Server. Browse site lists, document libraries, folders, and files. Download and upload files and folders, including
support for nested folders hierarchies. Create new folders, rename existing files and folders, and delete files and folders. Also, you can copy paths to files and folders to your clipboard. Drag and drop folders/files into the application
to upload to SharePoint

-Ivan