RIS - Unattended Installations

I've setup RIS on a server and created an answer file using Setup Manager. I added a line to REMBOOT.SIF for the Product ID like this:

ProductID="xxxxx-xxxxx-xxxxx-xxxxx-xxxxx"

I've tried this without the dashes also. During the installationit still stops and prompts me to enter the product ID. I have the same problem with the Name. It picks up the organization fine, but not the Name. I've put the remboot.sif file on the same diskette I use to boot to the network, but it hasn't impacted it at all. Where am I going wrong. Thanks.