You can submit your site here: http://www.search.yahoo.com/info/submit.html And keep working on SEO such as backlinks, keywords, and adding quality content.
Submit your website and it's xml sitemap/rss feed to Bing webmaster tools and it will be automatically affected in the Yahoo search engine. I would suggest you to go through with the following information to find why i am telling you to submit your website to bing webmaster tools when you're asking about yahoo: Continued: http://siteexplorer.search.yahoo.com/index.php
please tell me best social forum through which i can promote my site that is www.zoomboys.com and thanks for feedback
Yes work more with Bing Toolbox and you will be auto indexed with yahoo as Bing and Yahoo is in a SEO alliance.
Submit your site to Yahoo sitemap if there is one, promote your sites social media sites to get traffic and backlinks.