We have lot off search engines but mainly people looking for Google, Yahoo and MSN because they share largest share of search queries. If you want to submit your site you just pick site url and submit your site -
Submit your site in Google
Submit your site in Yahoo
Submit your site in MSN
Submit your site in DMOZ
If you want to submit some other top search engines try this list -
I hope this list is beneficial for your site ranking and searchability in search engine.