Recently I was asked to provide the same kind of "Current Site Navigation" on a Meeting Workspace template that appears on the site’s master page. Amazingly, given the right tools this is actually a VERY simple task. However, in order to accomplish this in the easiest method you will need SharePoint designer.
Steps:
- Open the Site using SharePoint Designer
- Open the Page with SharePoint Designer
-
On the Custom Content object in the Content Place Holder PlaceHolderLeftNavBar click on the > button and choose to revert to the master page content.
- If you want you can simple delete everything in the <asp:Content ContentPlaceHolderId="PlaceHolderLeftNavBar" …>…</asp:Content> section from the page
- Save the page back to SharePoint
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Go to the Site Navigation Settings page
- Site Actions->Site Settings
- Navigation (under the Look and Feel heading)
- Site Actions->Site Settings
- Choose the Display only the navigation items below the current site radio button in the Current Navigation page section.
- Customize the Current Navigation items in the Navigation Editing and Sorting page section.
David McWee 
David,
You just said Open the page – should I be in Master pages – editing the MWSDefaultv4.master? I don’t get anything under site pages. If I change the master page will this affect all Meeting Workspaces on my site collection or just the site I opened in Designer? Thanks for your help.