How do I update multiple list items at once in a SharePoint list

I want to be able to update a column value for for all ist items with a specific value in a different column.

I have a list with a column named "QID". There may be many records that have the same value for QID. I would like the option to change the status of all items with the same QID.

For example, if I set the status of one item to "Closed" can I trigger a workflow that will change the status of all other items with the same QID to closed?

I would want to fire the workflow manually, I don't want it to fire every time. Could i set a column called "Update All" with a Yes/No value (or something similar) to trigger the workflow when set to yes for instance?

We are uaing SP 2007 and I am familiar with SP Designer but i am not sure how to build this out. Any help out there?

Thanks much,

Steve