Last week yahoo has released site explorer tool(http://siteexplorer.search.yahoo.com/) and desktopsearch tool( http://desktop.yahoo.com/ ).
Did you try that? Well Yahoo says
Yahoo's Site Explorer shows all subpages within a URL indexed by Yahoo. You can also see subpages under a path and inlinks indexed by Yahoo! to a URL. You can also submit missing URLs to Yahoo.
But thing is that when you enter your site's url, it doesn't display all the inlinks.