What should I do when the windows firewall has the "Add Program" button grayed out? He is logged on as the administrator, I have never seen this before when trying to add Scanner File Utility to the exceptions. Machine is a 2550 and his computer is running XP. Thanks!

I assume the allow exceptions radio button is selected? If so, then have you checked the permissions associated with the admin account? Also if this computer is just a client on the network, the IT admin may have the permissions locked down everywhere but the server. Just a few ideas from a barely computer literate person. There are others on here that know a lot more.

Windows Firewall policies can also be controlled by group policy (usually when on a domain). If so the options may be disabled and have to be changed in the Group Policy Snap-In (gpedit.msc at the 'RUN' dialog).
Firewall settings and exceptions can also sometimes be 'forced' from the command line using the NETSH command - more information can be found on that here:
http://technet.microsoft.com/en-us/library/bb490617(TechNet.10).aspx

Ok, thanks I will check that out.

Group policy is normally the cause of buttons being "greyed out". you need to check the permissions of the account you are logging in under. there may be a 'master account' that has the permissions you need.

AHA, I knew Rob would have the answer!!! Our not so resident genius. BTW Rob, is it Grey or Gray?
Grey for buttons , but gray for mares? and what about these hairs on my head? I am not naturally stupid, I got that way with drugs and alcohol. LOL

SEE!! now I have to change my signature again!! thanks Doug
Grey/gray or Hey/hay (hey you grey haired copier dude stop feeding that hay to my horse!) I just made that up, i don't know that it's right.
And that stuff in your hair is called experience.