Chris O'Connor has released a great little utility (SafeControl Adder) that makes deploying web parts to SharePoint environments a little easier.
"...When deploying, the developer is required to “add to Safe Controls” - a bit of a tedious approach, with checking Global Assembly Cache (GAC) for PublicKeyToken, and manually modifying the [web.config] file.
To assist with these few manual steps, I’ve created a new utility for use within the SharePoint world....", Chris O'Connor
Check out full information about this control on Chris' blog.
Download SafeControl Adder - (check out Chris' blog for the latest version)