after installtion, ask for user registration.. and then log in. but log in is not working with the user id and password i created ...i tried soo many times installing ....please help

How about do a bit of work looking for this topic! http://www.zenphoto.org/support/topic.php?id=6246

its still the same,,, even i delete admin table... after running setup again
its the same..I dont know why its happening now.

When first time i install it, everything was perfect but then i delete this software from my server along with db.. and now its happening ... Please help.

Clear out any browser cookies having to do with Zenphoto and try the install again.

thanks, deleting cookies worked!