Bug 55056 [Workbench] would like to establish my workspace (and no longer be prompted)
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/IDEApplication.java
return null;
			
			File workspace = new File(instancePath);
			if(!workspace.exists())
				workspace.mkdir();
			try {
			    
			      
			    String path = workspace.getAbsolutePath().replace(File.separatorChar, '/');
				url = new URL("file", null, path); 
			} catch (MalformedURLException e) {
				MessageDialog
					.openError(
						shell,
						IDEWorkbenchMessages
							.getString("IDEApplication.workspaceInvalidTitle"), 
						IDEWorkbenchMessages
							.getString("IDEApplication.workspaceInvalidMessage")); 
				continue;
			}
		} while (!checkValidWorkspace(shell, url));
		return url;
	}
	/**
	 * Return true if the argument directory is ok to use as a workspace and
	 * false otherwise. A version check will be performed, and a confirmation
	 * box may be displayed on the argument shell if an older version is
	 * detected.
	 * 
	 * @return true if the argument URL is ok to use as a workspace and false