Here is a link for a site that will generate code for you to display your gamer card for XBox live on forums, blogs, myspace, etc. you cut and paste the code where you need it. I save the code as a .txt file on my computer using notepad so I can get to it without having to revisit the site every time. MyGamerCard.net
Here is the official XBOX version. the only difference is the site that sends the data.