There’s been a lot of buzz recently surrounding the Twitter Gadget that integrates with Gmail and iGoogle. It’s a relatively simple installation, providing you’ve got some instructions. Google Apps for Your Domain users will have to take a few extra steps that the Gmail users don’t have to.

Google Apps for Your Domain Users

Google’s Labs features aren’t enabled by default. If you’re administering your domain, follow these instructions to enable Labs support. Otherwise, have your administrator do them.

1. Go to https://www.google.com/a/your_domain (replace your_domain with your domain)
2. Sign in as the administrator of your domain.
3. Click the Domain Settings tab in the tab bar at the top of the screen
4. In the New Services and Features section, check the boxes next to Automatically add new Google services and Turn on new features
5. Click Save changes at the bottom
6. Wait about 24 hours for the changes to take effect. When the Labs features are enabled, you will see the Labs tab in the Settings page.

Gmail and GAFYD Users

1. In Settings, click on the Labs tab. Scroll to the bottom of the page where you’ll find the option to Add any gadget by URL. Select the radio button next to Enable, then click Save Changes.
2. Go back to the Settings page, but click Gadgets this time. Enter http://www.twittergadget.com/gadget_gmail.xml into the text box and click Add.
3. Enter your credentials and start twittering.
   

If for whatever reason you want to remove the gadget, go back to Settings -> Gadgets and click the Remove button for the Twitter Gadget.