Question : How to create a Second Global Address List in exchange 2007

has anyone created a Second Global address list in exchange 2007 before, is this recommned. And who would i do this?

If a second GAL is created, can the users from the first GAL see it.

thanks for everyone's help.

Answer : How to create a Second Global Address List in exchange 2007

yes you can create a second GAL. you can only create it with management shell.(link below)
why create one? you may want to have a GAL which includes only some users. you can include them by conditional atributes.
can you restrict GAL access only yo some users? yes... how?? see link below:

http://www.exchange-genie.com/2007/10/hidding-global-address-lists-gal-with-exchange-2007/

hope it helps