User ID in user home page

Need user ID to show in Login info box in users home page. Need to add a message that shows in "Categories" // This currently reads> "Checked categories and subcategories will appear in the results and can be chosen in the Add Object form." // When the below message is placed.. site shows a blank page. // Here is the script..with the message that needs to be inserted.. $data = array('header' => 'Categories', 'description' => 'Create a main category above. Like Household,Investment,Buissnes etc.. Create subcategory in relationship to main category. If you make main category Houeshold. Make subcategorys Rent,Food, Utility bills etc.. If you make main category Investments. Make sub-categorys Stocks, Bonds, Broker Fees, etc..You can make as may different categorys that you need. Like Personal, Family, Income, Transportation etc.. With as many subcategorys as you need. Checked categories and subcategories will appear in the results and can be chosen in the Add Object form.'); Need to stop script from setting up any Categories when a new user registers a new account. // Categories section is to be blank until user sets up their own personal categories up.