Workgroup name

I’m in the process of configuring all of our PCs, pritners, etc., in our network to use a common naming comvention. We have a Novell 6.5 network, Groupwise server, W2k SQL and W2k Term Servers. No domain but workgroup name setup in or PCs. Our PCs are running a mix of W2k Pro and XP Pro. I’ve run into something that i’ve not seen before. I came across a machine that won’t let me change the workgroup name. It is blank and grayed out. Button too. Nothing in the Domain name. Any help would be appreciated. Thanks.