how to automate the process of generating scripts for database objects

i searched a lot on google for code to generate scripts for database objects

i either found powershell scripts or this link

http://www.codeproject.com/Articles/42958/Automatic-Script-SQL-Server-2005-Objects-and-Commi

but i am not sure how to use the code provided in the link from SSMS

Could some please help me with a code to generate scripts for database objects

Thanks