A small plugin that allows one to change the logo, link and link description on the log-in page of WordPress
Use the new built-in WordPress interface. Access the Plugins submenu and select "Add New". From there you should be able to either upload the .zip file downloaded from the WordPress repository or search the repository itself. If you choose to search the repository enter "Logo candy" and on top of the list WP prints should be this plug-in. Refer to the WrodPress documentation on how to use the new plugin installation system.