How do I setup a username and password so when a url is opened the user is signed in?

signed in to what? A server?

afp://username:[email protected]/volume

i must be doing something wrong, so let's say that I want to login to my yahoo mail then would it be:

afp://ssaucedo:[email protected]/volume

or is volume generic and i need a specific piece of information that is the volume?

Unless your web server allows for the "post" commands (VREY UNSECURED) I don't think you are able

to automate the sign on using Open URL

our IT dept says that our web server allows post commands and if that is correct should the following work?

afp://ssaucedo:[email protected]/volume

afp is only for apple servers are you trying to access a website or windows fileserver?

probably

what would be the proper format for a web site or windows server?

I have done this on windows with a send event script step and a VBS script that uses the SendKeys Command. (very buggy, this automates keystokes to the OS, like typing on a keyboard)much the same can be done using applescript. This would not be my 1st choice but there are times when whatever you are tring to interface with is to "secure" to access any other way.

(this kind of solution is very difficult to get to work reliably but it can be done.)