If you are deploying your software manually, you are doing it wrong.
If you deploying once a month, you are doing it wrong.
If you as a developer are deploying from Visual Studio by clicking "Publish", you are doing it wrong.
If a bug-fix takes you 1 hour but your customer needs to wait a week until he gets it, you are doing it wrong.
Manual deployments are NOT fun. See a good way on how to automate the deployment with TFS 2010, msbuild and msdeploy.