When using Windows 7 the credentials dialogue suggests the domain you use for your Username is your PC-name or Active Directory domain. If logging into a remote site (for publishing, for example) this is usually not the desired domain for the username. Unfortunately, it is not intuitive how this can be changed.
The first login dialogue (taken from FrontPage) looks like:

Here the Domain is RONS-PC. This is not useful when trying to login to, for example, rxs-enterprises.org, or (in this case) 192.168.1.100, or your own domain.
To get round this, change the domain
.
If you simply enter the username and password, and click OK, the result will be the credentials are rejected, but the dialogue will change to:

With this dialogue, click "Use another account" - this enables the domain to changed.

Type in the user id in the form server\username and the Domain will change to the server entered. "server" is the domain you are attempting to login to - here it is an IP address 192.168.1.100, but can be in the form example.com (do not add a protocol such as http://

and login can be completed.
Of course there is a faster method - on the first screen just change the domain: Type in the user id in the form server\username and the Domain will change to the server entered. "server" is the domain you are attempting to login to - here it is an IP address 192.168.1.100, but can be in the form example.com (do not add a protocol such as http://
