need help please?

[sa3bin]

hello, ive asked a time before but,decided to try again.
what if i have users signup/log in but once inside can simply point there url to a page inside my site,no need for further log ins..
i tried the script in another thread BUT,it requires a update profile script which i did not include...exactly what code do i need for such a problem? (without the update profile script )
any help would be appreciated.

[sa3bin]

could SOMEONE please explain how to do the above???