Superku's post is the common way I do it. This is covered many times a year on the forum and I'm sure the AUM has answered it a bunch also And maybe the wiki. Try building a function and if you have problems with it then start a new post in the section Superku told you about and someone will probably try and help. You will get better replys if you post the code to a function and ask for help then asking someone to build a function for you.

@Superku - Just wondering if you have ever placed the camera inside a invisible entity and used c_move and GLIDE and a little logic. Just curious before testing if there is major flaw with this method.

EDIT - Thanks Superku