Help with Cisco PIX 501 Firewall

I have purchased a Cisco PIX 501 Firewall for our company. It says that it comes configured sufficiently for most companys. I am hesitant to install it until I know what the ramificaitons will be. (We have 1 web server and and Exchange server.) Ihave worked with other firewalls in the past, but don’t feel I have a good grasp on how to configure the PIX.

Is this an issue where I should consult an expert, or is there documentation somewhere that will aid in configuring this firewall?

Thanks