try {
/* Scope to RSSOwl Updates Only */
UpdateSearchScope scope = new UpdateSearchScope();
scope.addSearchSite("RSSOwl.org", new URL(UPDATE_SITE), null); //$NON-NLS-1$
scope.setFeatureProvidedSitesEnabled(false);
/* Run in Update Job */
final UpdateJob job = new UpdateJob(Messages.FindUpdatesAction_UPDATE_SEARCH, true, false);
job.getSearchRequest().setScope(scope);